Was it just me or in previous CIV games was there absolutely *no* point in building the intermediate technology units. I always found myself in the situation where I had the technology to build units like cavalry and ironclads but I never did because I knew that tanks and battleships were just around the corner. In Civ2 and CTP I my cities would get fortified with a couple of Phalanxs at the beginning of the game and my units would never be upgraded until machine gunners were available. I always felt like I was missing a huge part of the game as the ancient age screeched by at 50 years per turn.