Here's a good character idea
Name: Mike Jones
Age: 26
Appearance: Has short, black hair, and is shorter than most. More on the chubby side.
Personality: He is strong, and good at work. He has some combat skills, but mostly hates working. He isn't the smartest, but he's also not too stupid to come up with a plan. He's a good shot, but again hates the work. He was forced to go, he didn't go bye choice. He's also not the nicest guy, but he can be kind when needed. He was never that good with technology, and often confused many technological devices.
Back story: Mike was always a strong kid, and always lazy. He was born to a family with two sisters and an older brother. He was taught from a young age that its important to be strong, and that's what he focused on. He also was the disappointing child because of his laziness. He also, miraculously graduated high school. Shortly after the war he was drafted, he would not have joined up otherwise.
Weapons of choice: A standard issue Designated Marksmen Rifle, and Shotgun. Sometimes he uses a combat knife.