Starcraft 2: Wings of Liberty Terran Units: Marine

This StarCraft 2 unit guide will cover the Terran Marine unit. The Marine is the basic combat unit of any Terran fighting force, being a cheap an effective ploy to many other units in the game, especially considering their ability to be spammed early game. The Marine in StarCraft 2 comes armed with a C-14 Rifle and CMC Powered Combat Suit for protection, and was originally introduced in the original StarCraft.

In the Wings of Liberty campaign, the Marine is introduced in the first mission 'Liberation Day'

The Marine in StarCraft 2 is particularly effective against the Protoss Immortal unit, and is benefitted greatly by the support of either Medics or Medivacs, and with their support can be an effective foil against many other troop types. Marines are weak against Colossi, deployed Siege Tanks and the High Templar's Psionic storm abilities. Marines can be weak against Zerg more than Protoss, and are typically slaughtered en-masse without healing.

StarCraft 2 Terran Marine Stats
Build Cost: 50 Minerals
Build Time: 25 Seconds
Supply Cost: 1
Produced by: Barracks (Hotkey A)

Movement Speed: 2.25
Transport Size: 1
Sight Range: 9

Hit points: 45
Base Armor: 0
Unit Type: Ground, Biological
Armor Type: Light

Base Damage: 6
Attackable Targets: Ground or Air
Attack Speed: .86 seconds
Range: 5

Target Priority: 20
Kill Score: 100
Production Score: 50

StarCraft 2 Terran Marine Upgrades
Infantry Weapons: Researched by the Engineering Bay (hotkey E) and coming in three tiers, each level of Infantry Weapons gives +1 base damage to the marines C-14 Rifle. Tier 2 and 3 require the Armory to be built before upgrading. Tier 1 - 100 minerals, 100 gas, 160 seconds. Tier 2 - 175 minerals, 175 gas, 190 seconds. Tier 3 - 250 minerals, 250 gas and 220 seconds.

Infantry Armor: Researched by the Engineering Bay (hotkey A) and coming in three tiers, each level of Infantry Armor gives +1 base armor to the Marine's powered suit. Tier 2 and 3 require the Armory to be built before upgrading. Tier 1 - 100 minerals, 100 gas, 160 seconds. Tier 2 - 175 minerals, 175 gas, 190 seconds. Tier 3 - 250 minerals, 250 gas and 220 seconds.

Combat Shield: This upgrade increases the hit points of all Marines by 10, and adds a shield attached to the left arm of the unit's in-game model. This upgrade costs $45,000 in the StarCraft 2: Wings of Liberty campaign. In skirmish maps this upgrade can be researched at a Tech Lab (hotkey C) attached to the Barracks for the cost of 100 minerals and 100 gas with a research time of 110 seconds. Gives 300 points to score results for researching.

Stimpack: Gives a 15 second boost of 50% to the Marines attack speed at the cost of 10 life taken from the Marines hit points. This upgrade costs $35,000 in the StarCraft 2: Wings of Liberty campaign. It is impossible to stack this effect or use stimpacks while the effect is already active. In skirmish maps this upgrade can be researched at a Tech Lab (hotkey T) attached to the Barracks for the cost of 100 minerals and 100 gas with a research time of 140 seconds with a score of 200.

Click here to see a continually updated mission order and tech tree guide that shows what I have done so far, to explain how I have unlocked certain tech and units.