Game Usage
 Terran vs Zerg
The Marine is the backbone of the Terran army in Terran vs Zerg. Combined with the Medic, Marines are extremely cost effective and do full damage against all units.
 Terran vs Protoss
Marines are only used in the early game against Protoss, often as early pressure when Protoss decides to expand quickly.
 Terran vs Terran
Related ThreadsThe Marine (2006) - last post by @ Aug 4, 2009
The Sub-Mariner - last post by @ Sep 24, 2007