Okay - what he says you may have already figured out from the photo.
The date of the photo looks to be August 15, 1944.
USAAF (United States Army Air Forces) - Crew 43
Looks like he was the lead pilot if he is the guy on the far left in back, (speculation) because all of the other men have their jobs/positions listed on the back of the photo.
Looks like the photo was taken at the 714th Railway Operating Battalion - photo taken in Alaska my husband thinks.
The patch design on the arm of the guy bottom right looks like the 6th Air Force.
The type of plane he “may” have flown could have been an A-26 Invader or a B-26 Marauder, based on the size of the crew. Sending you a link which will have a picture of the patch.
Hope this helps a little.
Thank you!