Whole lot of ranged attack in these posts — cavalry and infantry.

Anyway, to answer the question: Clearly I'm a missile cavalry nut. I love all cavalry armies. However, what army I use depends on terrain and "city density."

If I'm campaigning in Germany or France, for instance, where there are a lot of towns close together, I like an infantry-heavy army with a siege train, going from one city to the next.

I don't think infantry are second-rate, although that's the clear implication made with the argument that going all-cavalry against the AI is too easy.

Cavalry is great, but send in the infantry when things are tough.