Okay, your responses are silly and... I have no idea what else to say without being rude, so I'll just show you the soldier's backstory.
Though he wanted desperately to fight in World War 2, the Soldier was rejected by every branch of the military. Undaunted, he bought his own ticket to Europe. After arriving and finally locating Poland, the Soldier taught himself how to load and fire a variety of weapons before embarking on a Nazi killing spree for which he was awarded several medals that he designed and made himself. His rampage ended immediately upon hearing about the end of the war in 1949.
He, literally, went on a killing spree because he was refused military position - likely because of his psychological issues. If that doesn't say crazy, I have no idea what does.
He buried a refrigerator in Merasmus' yard for Pete's sake and we don't even understand why, and let sour cream go bad because he 'would not dig up a refrigerator every time a raccoon wanted sour cream.'
Then he took a bunch of old ladies to non-existant forts and proclaimed them important historical landmarks despite the fact nothing was there. He then invaded a Celebrity's home to show them celebrities and killed him in front of said old ladies unprovoked.
In that same comic, he didn't even seem phased when the Pyro cut off his hand beyond acting like an annoyed kid.
The only merc nuttier than the Soldier is Pyro, and if you think otherwise you are probably just as crazy yourself.