Guardian GI

The Guardian GIs were Allies troops that were fantastic against vehicles and vehicles were unable to run them over. Unfortunately, they were only available for the Psychic Dominator Disaster.

Uses
They could be deployed into fortifications like their GI comrades, but they used steel instead of sandbags, and instead of a machine gun, fired missiles that could take down Yuri's vehicles and planes with ease.

Vehicles could not crush them.

Undeployed, they carried an automatic rifle that was effective against infantry.

Counters
Undeployed, they had light armor. They were easily killed by Gatling Tanks, Initiates, and other troops loyal to Yuri. Their rifle, while effective, only fired in bursts that were a few seconds apart, meaning that even against an Initiate, the Guardian GI would be the slower fighter and probably die. This is why they were so much better in their fortified deployment.