Looking at tech chart and.... yup, marines are the best non-tank land unit. Of course, when their nearest competition is an age behind them, they kinda win by default. I think that they need to be improved upon so that they aren't so specialized (read useless except in rare situations). Same goes with paratroopers. Give me a break, only good froma city with airport, and only a 8 tile radius? They were WAY better in Civ2 where they could go from any city, and any airbase (where did these go btw?) and attack the same turn. Almost always died unless fighting stone age guys, but they served their country. Nowadays you gotta walk them to the battle. BOOOOO!