Many historians argue over the number of troops that Hannibal started off with. Some believe he marched on Rome with
about 60,000 infantry, cavalry, and elephants. Others argue it was more in the 40,000 range. Whatever the number, against
the Romans, he was almost always on the short end of the stick in terms of numbers. He exited the Alps short on men by
about half, but after many small victories over the Romans, many territories and provinces sided with Hannibal, giving him
additional troops. This was Hannibals strategy from the begining. He figured that many provinces would side with him and Carthage
after winning battles; he just underestimated how many would turn, and that in turn might have cost him the war.