A World of Heroes 7 #1

Man Power: Fights the War
Man Power is dead.
Killed by a B-52 bombing raid, his body was bloodied and broken at the bottom of a crater at the end of the last series. His loyal soldiers oversee his burial.
Only to have his mechanical remains emerge from the ground. Now fully mechanical this doppelgänger has no idea he is not alive. It is determined to continue the mission to avert the Vietnam War. Dismayed L.B.J. sets a new plan to eliminate this trouble maker.