Its a bit complicated, id say the single piece with ''thin 11'' is war time with the one on the far right being occupational period (I believe), the middle being post war. I could be wrong though.

The guy it background has a very strange gun. Apparently bent barrels are normal. Also look at the size of the camera in the other jeep. 

Thank you for the input ,I am a mostly Navy collector and likely will not buy a book for 7 uniforms.

These embroidered flags with dates all appeared in the 80s or 90s.   Ive never trusted them.

So would the 96 be his soldier number? But yeah I agree I think we have the right guy. Thanks for the extra help.

You know what, for some reason obvious hadn't even crossed my mind. 😁

Seldom-seen, current official issue pin for Deapartment of the Air Force civilian retirees.   Source:   https://militaryuniformsupply.com/products/united-states-air-force-civilian-retiree-lapel-pin  

The hat was in rough shape when I got it, it completely lost its montana peak shape. It was more of an oval shape on top. But it looks a lot better now after I reshaped the hat. The sweatband needs to be restitched but thats about it. They actually had 2 campaign hats at the show I should have bought both. I could have bought both for $50 looking back i should have done it. 

Here are the full WWI US Transport records for William below, Outgoing and Incoming.       WWI US Transport - William A Fisher.pdf