First off, here's his looks

Despite the images, Jax has black hair with blue eyes that almost seem to be glowing. He's not very tan, but he's not white like a ghost either

An image from WWII as he volunteered at 17 right before Operation Overlord

The image above is Jax in Civilian clothing, he wears this or outfits like this when undercover or off duty

After being called back to serve, Jax was assigned to a Special Forces Unit, they were basically made up of the top of the class at boot camp, and those with prior service with excellence. They were armed with newer weapons, almost in a testing stage, and two different levels of body armor/ uniform. What is seen above, and below

The point of the Unit is to conduct sabotage and recon missions against the U.S.S.R
They are not to be related to the United States at all, as if they are caught the U.S Government will Disavow any relation

Details:
Full Name: Jackson R. Williams
Nickname: Jax, Jaxy, Callsign Vengeance
Species: Human
Age: 20. He was in WWII from the time he was 17 until 20. He had only been out for about 6 months before called back into action
Extra: Jax speaks English, he has a slightly southern accent. He also knows a base level or Russian, and German
Personality: Jax is a very can do will do attitude.as soon as he had the choice to serve he did. He is very protective of people that he cares about or are close to him, like family, friends, whoever he is with, and his Unit. His callsign is Vengeance as almost his entire original platoon was wiped out in the first few days of Operation Overlord, and he'd sworn he'd avenge each and every one of them. The sheer desire to keep those close to him safe can cause him to make stupid and risky decisions at times.
Weakness: Due to his experiences during WWII, He ended up with a form of PTSD. Sometimes sounds and sights can trigger it to go off, and he can't really control it. Someone has to anchor him down for a few minutes.
This is what he sees sometimes when it gets triggered

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