The Army of the Potomac. The corps taskrd for defending Virginia during initial Posleen landing when they got absolutely whipped. They had M 1 tanks bradleys and reavers but their artillery systems were hacked causing casualties and friendly fire also shutting down artillery units making them a easy grocery store for the posleen. Their full cofiguration amounted to about 70,000 personel. And most of them were killed some of them were able to get to Ninth Corps posistion. Luckier ones were able to get to the Washigton Monument and become part of the 600