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Sealion Fails

ChrisNuttall

Well-known member
Sealion Fails

What Actually Happened:


On paper, the German plan to invade Britain seemed a good and workable idea. When they came to look at it in more detail, however, they rapidly discovered it was a bridge too far. No sane military commander would have authorised the operation, even though victory was possible on paper. Even Hitler shied away from it as the difficulties became more and more apparent and, when the RAF was victorious in the Battle of Britain, he decided it would be better to concentrate on his plans for invading Russia instead.

What Might Have Happened:

Hitler was a lucky gambler. He had a string of victories to his credit and his failures - his confident belief Britain and France would not declare war in support of Poland - hadn’t been anything like disastrous. His gambles had led him to dominance over Norway, Denmark, France and Belgium and he had the power to overawe the handful of independent states within the continent. Why not try to roll the dice once last time? His forces were extremely capable and well-equipped, while the UK was short on everything except manpower. If the Panzers got to shore in a reasonably intact condition, the ultimate defeat of Britain was inevitable.

The invasion, therefore, was launched on the 14th of July (Macksey’s date). It rapidly turned into a total shambles. The first wave was seriously weakened by the Royal Navy and RAF, sinking so many barges and other invasion transports that it became clear that resupplying the forces on the far side of the Channel would be extremely difficult. The parachute and glider attacks did a great deal of damage to the defenders, but British troops were well dug in and reluctant to abandon their posts. Deeper strikes into British territory, aimed at capturing RAF airfields for German use, failed completely. The Germans did manage to land a number of panzers in the opening wave, with Rommel taking command after the formal commander was killed during the crossing, but they rapidly ran out of supplies. The Royal Navy swept through the channel, wiping out the remainder of the invasion fleet, while Rommel was unable to capture a port (and, if he had, given the shortage of German shipping it probably wouldn’t have mattered). By the 18th, it had become clear that Operation Sealion had failed so badly the Germans couldn’t even withdraw. On the 20th, the remainder of the invasion force threw down its arms and surrendered. Britain stood victorious.

Perversely, the shipping shortage kept the defeat from being worse than it could have been. Large formations earmarked for the trip across the Channel were never sent into battle, limiting the losses. The handful of divisions that were effectively destroyed or captured were painful, but hardly fatal. Hitler still ruled or overshadowed the continent. The German propaganda machine started pumping out claims that the invasion had really been nothing more than a large-scale raid, intent on disrupting British preparations to meet an invasion rather than occupying the entire country. Hardly anyone believes them, but the Germans are still too strong to defy openly. Still, resistance movements within Occupied Europe and Vichy France take heart from Hitler’s first major defeat.

The Germans haven’t lost that much manpower, relatively speaking, but the damage is highly concentrated. The paratroops and glider formations have been wiped out. (Otto Skorzeny met his death on the White Cliffs of Dover). The Kriegsmarine has lost almost all of its surface units, along with vast numbers of naval-trained personnel; the Luftwaffe has taken heavy losses in both bombers and fighters, along with personnel who were sent along with the invaders to secure captured airfields and coordinate operations between the army and air force. A great deal of institutional knowledge has been lost. The Germans can rebuild, and will given time, but their military will be a great deal less flexible for at least two or three years to come. Worse, the loss of the barges has had a serious impact on the German economy. The Reich’s ability to rebuild has been compromised. Given time, it can be fixed, but will they have the time?

Hitler’s position has been gravely weakened. The myth of the Fuhrer’s infallibility was only in its infancy in ATL; now, it has been shattered beyond repair. There is little open opposition, but the generals get more daring in their criticism of Hitler’s plans and concepts, as well as resisting attempts to either insert Nazi loyalists into the chain of command or diverting men and martial into SS divisions. Hitler publicly blames Goring and Raeder for the disaster and sacks both men, but he knows their replacements will take time to repair the damage. Donitz promises a new u-boat campaign, yet even that will be tricky. The navy is very short on manpower.

The repercussions of the defeat continue to spread. Mussolini finds his position weakened too, as large numbers of Italians doubt Hitler’s worth as an ally and seriously regret allowing their leader to take Italy to war. Stalin licks his lips and considers quietly putting pressure on Hitler for more concessions, while trying to determine if the USSR can win a war with the Reich. Franco edges away from Hitler, quietly deciding that supporting the Germans openly is asking for trouble. Portugal makes moves to support the British, instead. Japan realises the British are far from beaten, making them reluctant to jump on the British Empire (as they planned in the event of a successful Sealion). America starts to slide towards openly supporting the British.

Churchill is determined to capitalise on the British victory. Thanks to Ultra, he is aware of both the German losses and their political uncertainty. He is also aware that the Germans cannot possibly launch a second invasion, certainly not within the next two-three years. He moves troops and ships into the Mediterranean, then reinvigorates the sputtering desert war by ordering an invasion of Italian Libya. The Royal Navy cuts the supply lines between Italy and her colony and, when the Italian Navy comes out to fight, soundly beats it. The Italian troops in Libya fight well at first, but when it becomes clear they’ve been cut off they start surrendering in droves. British spearheads are soon closing on Tripoli.

Mussolini begs Hitler to help him. Hitler has little to send. Shipping supplies across the Mediterranean is extremely difficult, nor do they have the air power to make a serious difference. The Germans do sent a handful of troops as stiffeners, but - again - nowhere near enough. (They also start drawing up plans for occupying Italy, if Mussolini falls and the Italians try to switch sides.) They try to convince the Turks, Greeks and other Balkan states to either join the war or allow German troops to transit their territory, but with the British in the ascendant (at least in the Mediterranean) there are no takers. Most neutral powers are waiting for a clear victory to emerge. Tripoli falls in late 1940 and the British start pressing against Algeria’s borders.

This sets off a political crisis. Some elements of the Vichy Government would like to either switch sides or seek a more equable relationship with the Germans. The former is difficult because of the German military supremacy, while the latter is impossible as long as Hitler is consumed with hatred for the French. The Free French are still quite a small force at this point, but they are loud and determined to push Churchill to occupy Algeria and hand it over to them. The Algerians themselves are looking for potential independence, but don’t trust any of the European powers. Hitler demands Vichy allow German troops into Algeria, to push the British back into Egypt and beyond; Churchill plays a game of hinting Algeria will remain untouched as long as Vichy remains effectively neutral in the war. Hitler suspects, correctly, that he’s running out of time. Italy is on the verge of dropping out of the war, while the Soviets are starting to make sharper demands for goods and services in exchange for raw materials. Hitler masses forces on the border of Vichy France and presents the French with an ultimatum. The Vichy Government shatters. Some elements put their contingency plans into operation, trying to get as much men and material out of France as possible before the Panzers make it all the way to Marsalis. Others surrender to the Germans, convinced resistance is futile. The confusion leads to absolute chaos, but - when the dust settles - it becomes clear the Germans control France, yet cannot project power to Algeria.

The confusion gets out of hand. French Algeria is under the control of the runaway Vichy politicians, who also control the French Navy. The Free French are pissed about this, pointing out that Vichy was at best neutral and at worst outright collaborators. France itself is under German control, but much of the pre-war infrastructure is still in place and Vichy has contacts at all levels of society. The sudden shockwave sets off another series of political chaos in Italy. The Italians are reluctant to openly dispose Mussolini, as that might draw Hitler’s wrath, but the government sidelines him as much as possible. There’s little hope of a formal peace treaty, as long as Hitler is a brooding presence to the north, but the Italians come to a quiet understanding with the British. They won’t commit themselves fully to the war, and they’ll do as little as possible, as long as the British don’t push them into Germany’s arms. Churchill agrees, for now.

Churchill has good reason to be pleased, although the war could still go either way. Britain has a string of victories to her credit. She’s also secured the Mediterranean and won a new source of manpower in French Algeria and (occupied) Libya. There are political clashes with nationalist forces in both countries, as well as struggles between Vichy and Free French leaders - the British work hard to get the two factions to paper over their differences - but they can be handled. The British Empire is relatively quiet. Turkey, Spain and the other neutral powers appear to be remaining neutral. More interestingly, Britain captured a sizable number of German weapons during the invasion and several of them have been reverse-engineered, then put into British production and service. He shifts a number of British units to Singapore, in hopes of deterring the Japanese, while drawing down the forces in Hong Kong (as the British have learnt from the German disaster and calculate that, if Japan does launch an offensive, Hong Kong is doomed). Britain is effectively growing stronger for as long as her forces are not involved in major fighting.

Germany is in a downward spiral. Hitler is still in control, but his power is far less than absolute. His health is worsening, which doesn’t help. Several of his ‘supporters’ are suggesting it is time to seek a peace treaty with Britain, although what - very quiet - discussions are held suggest that neither power is prepared to accept what the other can reasonably offer. The economy is weakening rapidly, making it harder to rearm the military or obtain foreign exchange. Stalin is tightening the screws. Hitler is unimpressed with the Red Army, after the failure in Finland, but his generals - more willing to challenge him in this timeline - point out Germany has its own weaknesses. They simply don’t have the capability to mount a major invasion. Even trying to bite off East Poland and the Ukraine would be extremely difficult, leaving the Germans vulnerable to a major counterattack.

As 1941 moves on, the war seems likely to become a permanent stalemate ...

Where do we go from here? Will Germany still try to invade Russia? Or will the Germans seek to occupy Italy while rebuilding their navy? Or will Stalin try to stab Hitler in the back? Or invade Manchuria instead? Will the Japanese declare war on America? Or risk hitting Britain and Britain alone? Will America be so willing to come to British aid, if the British Empire looks far more able to survive the war? Would Hitler reluctantly agree to a peace treaty? Or would he be overthrown and replaced by a more reasonable government? And what would this mean for the Holocaust? Would it even take place in this universe?
 
I don't think Britain would feel they could trust a peace treaty with Hitler at this point. They'd need guarantees, facts on the ground to prevent the Nazis from reneging on the deal - and that will make the price of the deal too high for the Nazis to accept, IMO.
 
I really don't see Hitler doing this.

Like the defeat of the RAF was a requirement because without it the RN could not be defeated and the Kriegsmarine had been butchered invading Norway in a far more permissive environment, they were well aware they could not make an opposed crossing. The Army commanders were initially incredibly optimistic (though not all of them) but within weeks were noticing that every condition for success was absent and even Hitler's own preconditions were not being met.

If the Luftwaffe do break the RAF and force it to withdraw to the North then the next step becomes the Kriegsmarine trying to win control of the channel and that seems very unlikely to happen in spectacular enough fashion to make a crossing seem like a practical option.


And if the Germans *do* roll sixes twice and beat the RAF and Royal Navy on home ground why then does the invasion fail? If the Germans are in a position to launch Sealion they've probably already put themselves in a position to break Britain's warfighting capability.
 
Hitler really was a lucky gambler, at least until 1941 when the odds got too high.

From his POV, a successful invasion gives him a secure western front for when he heads east. Even a failed invasion is not a complete disaster - the Germens cannot ship their entire army over the channel, even if they wanted to. He might decide to roll the dice again if it seems even remotely possible to either suceed or bang the british up enough to make them agree to step out of the war.

Of course, in OTL, he didn't try. Here, he did.
 
Hitler really was a lucky gambler, at least until 1941 when the odds got too high.

From his POV, a successful invasion gives him a secure western front for when he heads east. Even a failed invasion is not a complete disaster - the Germens cannot ship their entire army over the channel, even if they wanted to. He might decide to roll the dice again if it seems even remotely possible to either suceed or bang the british up enough to make them agree to step out of the war.

Of course, in OTL, he didn't try. Here, he did.
But why?

Again Hitler *himself* set the preconditions for the operation none of which were met OTL so he gave up on them. There is gambling and there is picking an option you yourself had determined has *zero* chance of success and everyone around you will say it has zero chance of success and serves as a major distraction from the war you actually want to fight.

Hitler was not an idiot. He throughout the early and mid war left most meetings with people commenting he picked up the essentials immediately, he was prone to looking in great detail at niche areas becoming incredibly concerned over certain looming threats whilst disregarding others. But Sealion is the type of operation where whatever caught his interest would soon have him having kittens over the danger. When it was more a staff study and diplomatic tool that didn't matter but the moment it becomes a real operation with real problems to solve is the moment he'd rule it out as impossible, as he did OTL when the first setback happened in the form of the Luftwaffe failing to break the RAF.

Sealion was not just a dash across the channel and was never imagined as such.
 
Sealion Fails (Part II)
Continued ...

Sealion Fails (Part II)

What Has Happened So Far


The Germans attempted to invade Britain in 1940, after the Fall of France. The invasion rapidly turned into a disaster, with the near-complete destruction of Germany’s navy and large swathes of its air power (mainly transport and bombing units). In the wake of their victory, Britain rapidly defeated the Italians in North Africa and started pushing into French North Africa. This sparked off a series of events in France, with the Germans taking over the mainland and the remnants of the government fleeing to North Africa along with most of the French Navy. The war appears to have stalemated. Germany cannot crush Britain, while Britain cannot liberate Europe from Germany. It is now mid-1941.

The Course of the War

Hitler doesn’t want to admit it, but Germany has been gravely weakened – directly and indirectly – by the failed invasion. The economy is in trouble because of the destroyed barges, making it difficult to sustain the military, let alone make it larger. The Germans have had to cancel their battleship program, in hopes of directing resources to replacing the lost material, but it will be years before they recover themselves. Their ability to even grind out more u-boats is very poor.

This has badly weakened the Nazi Regime. Hitler is still in control, at least on the surface, but the various military factions are banding together to resist him. The Germans don’t have the resources to support a separate SS military, which limits Hitler’s ability to purge untrustworthy generals. There are already quiet suggestions Hitler should quit while he’s ahead, although he’s not interested. He doesn’t have many options. The British and Germans sound each other out, in hopes of coming to terms, but neither side is prepared to offer a deal the other can reasonably accept.

Hitler knows time is running out. Britain is getting stronger, because the Germans can’t block the flow of supplies from America. France is restive. Italy is trying to back out of the alliance. Stalin is tightening the screws, demanding more and more in exchange for Russian raw materials. The rest of Europe is remaining neutral, rather than turning against the Reich. Hitler discusses plans to invade Russia or Turkey with his generals, but they veto both of them. In this timeline, Hitler simply doesn’t have the prestige to put them back in their place. They still respect him, but they know he’s fallible.

Churchill has mixed feelings about the way things are going. Britain is getting stronger. That’s good. Britain cannot actually win the war outright. That’s bad. Churchill is uneasily aware America is less concerned about Germany in this timeline, now Germany looks less of a threat. Britain’s ability to continue funding the war is more limited than the Americans seem to realise. The UK needs peace, but it also needs Hitler gone – ideally, a return to 1939 borders. It isn’t going to happen.

Japan is caught in a trap. Their war in China is getting bogged down. American economic warfare is weakening them badly, while American military power is flowing into the Far East (as they don’t need so many deployments to the Atlantic in ATL). The Russians are a looming presence to the north. Britain is weaker, and Hong Kong has been effectively denuded of defences, but they’re clearly no pushovers either. The Japanese agonise over the problem as the screws continue to tighten. If they back down, they may face demands for more and more concessions (and all the while their enemies will be growing stronger); if they fight, the odds of winning will be very low indeed. The Japanese start recalling their merchant ships through mid-1941, in hopes of having them in home waters when the shooting starts. Without every quite realising it, the Japanese have made the decision for war.

The recall tips off both Churchill and FDR. Britain and America both send reinforcements to the Far East. Japan panics and strikes first, launching bombing raids on British and American possessions and following up with invasions. Pearl Harbour is left untouched in this timeline – the Japanese don’t have the resources to strike the base, not yet. They call on Hitler to declare war on the US. Hitler is keen to lash out at his tormentors, if only to do something, but the generals veto it. Germany will sit this one out. Perversely, this works in Japan’s favour. There are limits to what the UK can send, with Germany looming on the far side of the channel.

The Japanese take Hong Kong fairly easily, but find themselves bogged down as they approach Singapore. Wavell is in command and he’s a solid general, one not given to panic as the Japanese try to bluff him. They find themselves fighting desperately to take the Philippines and the DEI, which tips FDR’s hand. The USN cannot leave MacArthur and his men to die. The USN departs Pearl Harbour, intent on carrying out the original War Plan Orange. The operation is a total disaster. Japanese carrier-borne aircraft savage the American ships, sinking most of them. America is far from beaten, but the losses are high and it will take quite some time to rebuild and train new sailors and airmen.

This doesn’t solve the problems facing Japan. They may dream of global conquests, but their reality is far bleaker. They have to keep most of their army in China and Manchuria or the Chinese will grow stronger and the Russians might invade. They can and do take most of the DEI and Philippines, now the American fleet is gone, but they’re brushing up against some very hard limits. Singapore makes life harder for them by deploying British submarines against Japanese supply lines. The Japanese retaliate by hunting the remaining Royal Navy ships in the region and bombing India, but it isn’t enough to knock Britain out of the war. By the time they finally drive Britain out of Singapore, it is too late to inflict a mortal wound on the British Empire.

Stalin is content to play a waiting game as the capitalist states weaken each other. The Russians are growing stronger day by day. Stalin knows he may be able to snatch Manchuria and Korea, or even head west and smash the Reich. He even has visions of invading Iran and taking a warm-water port for himself. The Red Army is learning more and more with every passing day. Why should he not?

Churchill and FDR meet for discussions. Churchill wants to focus on Germany, ideally liberating Europe before the Reich becomes unstoppable or Stalin invades. FDR knows he can’t support the British openly – Germany didn’t declare war, nor is she offering the US any openings for sneaky provocations. The US can and will supply Britain with arms and war materials, but she can’t go much further. Churchill isn’t pleased. The war cannot be allowed to drag on indefinitely, yet he has no way of bringing it to an end.

The USN returns to the war in early 1942. The Americans have learnt a great deal from the previous disaster. The new USN is a carrier-based force that far outnumbers its enemies, although – at first – it is much less experienced. There are a series of navel encounters throughout the rest of the year, each one grinding the Japanese navy down until it has to pull back. Matters are made worse by a major submarine offensive and a Anglo-Indian thrust back to Singapore. The Japanese find their empire starting to come apart and start pulling troops out of Manchuria, trying to patch the holes. Stalin sees the movement and jumps. The Red Army hits the remaining Japanese, trying to blitzkrieg them. The Japanese fight hard, and the Russians aren’t as prepared for modern war as they think, but the sheer weight of Russian firepower and armour drives the Japanese back. They would lose completely if the Russians just kept going. Instead, the Russians go too far, outrun their supply lines and get overextended. The Japanese have a moment to launch counterattacks that weaken the Russian offensive, slowing it down.

The Russian attack on Japan kicks off a political storm in Nazi Germany. Hitler wants to launch a limited offensive against the USSR, in hopes of seizing the resources he needs to keep the Reich alive. The generals are much less enthusiastic. Hitler orders the SS to arrest the dissident generals, sparking off a series of firefights as the generals – who had their own contingency plans – fight back. Confusion reigns supreme as various military units are drawn into the fighting, unsure who is really in command. Hitler himself is shot in the confusion, with the various senior Nazis taken into custody. The generals struggle to patch together a government. It isn’t easy. There are very few senior politicians who can be trusted.

Italy takes advantage of the chaos by formally withdrawing from the war and seeking a separate peace, formalising the under-the-table agreement made in late 1940. Mussolini is ordered to support the peace at gunpoint, then ‘shot while trying to escape.’ Churchill is both relieved and fearful, glad to have the Italians out for good while concerned about how the new German government might react. They might invade Italy to unite their country against (another) foe.

The Germans reach out to Britain, seeking an agreement. The talks are very imprecise. Germany wants to keep what it has, Britain wants a return to 1939 borders (independence for France, Norway, Denmark and West Poland). Both sides agree on a limited truce, at least for the moment. No one really expects it to last.

So … where do we go from here?
 
The Germans reach out to Britain, seeking an agreement. The talks are very imprecise. Germany wants to keep what it has, Britain wants a return to 1939 borders (independence for France, Norway, Denmark and West Poland). Both sides agree on a limited truce, at least for the moment. No one really expects it to last.

Why on earth does Britain agree to a limited truce under these conditions?

I can see not a single reason why Britain might agree to any terms that Germany would find acceptable. You can add Belgium and Netherlands to the list of a return to independence as a prerequisite. Without France, Netherlands, and Belgium to loot, the German economy is screwed nine ways from Sunday; without the barges, the German economy is screwed nine ways from Sunday; without Italy, German access to the Med is non est.
 
Also surely Britain would be demanding Czech independence, even if that might not survive negotiation?
 
Why on earth does Britain agree to a limited truce under these conditions?

I can see not a single reason why Britain might agree to any terms that Germany would find acceptable. You can add Belgium and Netherlands to the list of a return to independence as a prerequisite. Without France, Netherlands, and Belgium to loot, the German economy is screwed nine ways from Sunday; without the barges, the German economy is screwed nine ways from Sunday; without Italy, German access to the Med is non est.

The problem facing Britain is that the country has more commitments than it can comfortably pay for. Historically speaking, the UK came very close to bankruptcy in 1941 and even after the end of the war in OTL, the UK was very short on cash and couldn’t afford to maintain an empire. The US did help a lot, it cannot be denied, but even so the UK was very poor for quite some time afterwards.

In ATL, there are several major problems facing the UK. They cannot win the war by invading Europe. There’s no hope of US forces joining the UK because the Germans haven’t declared war on the US and they can’t provoke the US, even if they wanted to, because they no longer have the naval power to do it. They simply don’t have the power to force the Germans to disgorge most of their conquests, and there’s a very real risk that – if the Germans collapse – the Russians will come in and take over. There’s also the possibility that, if the Germans do manage to rebuild and/or keep the war going, the UK will simply run out of money and resources. The Japanese War is not helping – the UK needs to invest in a lot of things that aren’t much use against a weakened Germany, but desperately needs against Japan.

The truce is not a permanent treaty and no one really expects it to last. It’s more of a breathing space in hopes of coming to better terms, spurred on by the awareness the war has effectively stalemated.

I think a lot of people overestimate the UK in 1940-42 and underestimate the weaknesses of Churchill’s position. There was a sense, in many ways, that the UK might lose the war and/or win while losing much of its empire and global position. There was also a fear that the UK would be permanently eclipsed by the US and the USSR, to the point one could reasonably wonder if the outcome of the war would be nothing more than huge debts, a vanished empire and Russia occupying Poland (for which sake the UK went to war.)

Chris
 
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