Almost immediately, an additional system emerged for incorporating non-Romans into the army. In addition to incorporating subjugated people into the legions and “Romanising” them, non-Romans were used, called auxilia (literally, helpers). These first appeared during the Civil Wars, with Julius Caesar placing heavy reliance on Gallic cavalry to support his legions. At first, the auxilia were a small part of Roman armies, but by 23AD, they made up half of the total strength of the Roman army. This proportion seems to have then remained constant.