Marine (StarCraft II)

The marine is the basic infantry unit of terran forces.

Strategies
The marine's ballistic alloy combat shield grants more hit points, giving them more survivability against high-damage units. As long as the marine can survive a hit, a medivac dropship can quickly heal it.

Marines excel against void rays given the ship's weakness against mass units with low HP and immortals, given its similar vulnerability. However, they are weak against the colossi, due to their thermal lances and the high templar's area-of-effect psionic storm. They are a crucial component of the MMM strategy, which is particularly effective against protoss zealot/stalker combo and massive zerg roach army.

Marines tend to be less effective against zerg opponents than other foes and it is not recommended that a player rely on them heavily.

Against terran opponents, s can be argued to be a viable counter unit, as opposed to their vulnerability to melee units.