From the box back: In Semper Fi, you are a Marine Battalion commander leading an elite fighting force - locating, closing with, and destroying the enemy. Just like the Marines, you'll have to be prepared for any mission, whether it's hostage rescue, humanitarian assistance, or all out war. To aid you in your task, you'll have command of a vast array of infantry and armored vehicles, with forces ranging in size from a single company to a complete battalion. And for the ultimate in combat, you can engage your friends via head-to-head modem, network or internet play. Features: 3 campaigns and 15 stand-alone scenarios Full-featured scenario builder and map editor for unlimited gameplay A huge variety of unit types including infantry, armor, amphibious assault vehicles, helicopters and recon Realistic modeling of command and control, as well as morale effects on all troops Online database of equipment and units Multiplayer options including head-to-head modem, network and Internet play (for two players)