If I don't have Tanks yet, I use Marines as assault troops. Obviously, they're especially useful if you're attacking different continents or islands. I'll send a transport full of 'em to every coastal city of an enemy, attack and raze all of them. Reduces the enemies borders quickly and lets me move troops without the movement penalty of being inside enemy lands. Sorry about this thread. I accidentally created it while trying to respond to Oo's thread about Marines. Clicked on "new thread" instead of "post reply". This hopefully will explain why this thread is relatively "content-free". Again, I apologize.