You just got lucky, tbh. I had an article scheduled for today which the author couldn't deliver because of personal reasons. In those cases, that's normally when you see an article by me, I always have a few in the drafts ready to fill gaps but I'd got this article a few days earlier so it could be fitted in instead.
It can be a challenging area to explore in AH writing. When I looked at a US-Mexican War as a result of the USA staying out of the First World War, in 'The Three Eagles', I was bombarded by irate Americans insisting that it was all impossible because, apparently, even just American civilians with their weapons at home would have, they insist, been able to defeat any Mexican army very easily, even if it had been well equipped by the Germans (or indeed the Japanese). It overlooks how poorly equipped and prepared the US Army was when it went to war in 1917, having in some cases to use Civil War uniforms and in many cases, weaponry provided by the French. Yes, the USA would have ultimately won through, due to its larger population, but it would have had to work hard. It may have ended up in a Vietnam-style situation, especially if you look at how poorly Pershing's Punitive Expedition, 1916-17, into Mexico, went. Mexico was one of the first countries in the world to establish an airforce, as part of the army in 1913 and then its own right in 1915. This is one area in which current prejudices among vocal American commentators about Hispanic people spills over to challenging AH writing.Japanese spies gunrunning into 20s Mexico sounds the sort of the thing mankind invented AH for