Combat barrier

A pair of UNSC Marines use Combat Barriers to defend against the Covenant boarding of the UNSC Pillar of Autumn.

A Combat Barrier is a mobile ground barrier used by United Nations Space Command infantry forces. They can be deployed and set up relatively quickly to aid the defense of a strategic position on ground, ship, etc. .

Background

Combat Barriers are placed and situated all around strategic locales as defensive mechanisms against enemy weapons flanking fire. Several types of barriers exist, but all are made of thick battle plating presumably made of titanium or titanium-ceramic armor.

The purpose of combat barriers is to protect soldiers and Marines that are located in bases, dug-in fortifications, and other facilities, from the enemy. While they are almost impenetrable to plasma and projectile weapons, they do not protect well against the concussive force of an explosion such as a rocket or grenade impact, but do well to absorb shrapnel and flying debris. they are not that effective against Covenant weaponry though.