Romans And Greeks

[Snoil The Mighty]

Cavalry, especially heavy, Sarmatian style cavalry came to dominate the battlefield for the most part. Not a Ph.D. in military history but I am guessing it was a natural switch to meet the forces coming their way, ie-Huns and other horseborn steppe fighters. Wasn't til massed pikes came back into fashion that the old hammer and anvil came back into the playbook for the most part, although it was probably not until King Gustav of Sweden that the first army in history Alexander would NOT have been right at home commanding was actually fielded. Gustav modernized the use of gunpowder and based the entire army around it to very very potent effect.

Edit -The allcaps NOT was edited in, I was in hurry in the initial reply.