I haven't played a lot of civ 4, but plenty of the prequels. I came to the forums looking for a discussion on strong/weak UUs/civs and in a few hours of browsing haven't seen anything. I mainly play 1v1 games on a Duel-sized map against another human... haven't lost so far, and here are the keys to my success. 1. Caesar's Praetorian 2. Mao's Cho-Ko-Nu (aka Chuck Norris) 3. Huyana's Quechua The games haven't gotten to the knights-level yet otherwise I think that Spain's conquistadors, and (later on) the Cossacks look pretty tough. If you had to pick a civ based on their unit only, what are the best?