Counterfeit Hero

What can a machinery maintenance soldier do? Research, modifications, creative thinking? What can a mecha warrior do? Fighting, sensitive operations, peculiar moves? What can an elite scout do? After sneaking behind enemy lines, bare-hand techniques, immediate suppression, camouflage, stealthing, sniping? What can a military officer do? War simulation, planning, reign victorious by outsmarting?
The genius who combined three professions into one, and is even skillful in psychological science, deceit, assassin disguises, is a spineless, disgusting, despicable fatty.
When such a queer person is dragged into a war, what will he do? Will he become a hero, or a coward?