I know very little about my grandfather. He died when I was about a year old and never really spoke of his time in the Pacific.
My family doesn't speak much of him, either. Based on how my mom describes him, he seemed to show the classic signs of PTSD (I'm a therapist).
I found his obituary in an archive online, which said he was a field medic. His tombstone says "Tec 4 US Army," which I believe indicates technicians with special skills that may or may not be combat related.
I'm hoping to find a way to research his unit or squad, so I could track his whereabouts during the war. I've tried searching his name on WW2 archives to find out which unit he was in and when he served, but could not find him.
Like I said, my mom doesn't talk much about him and he talked even less about his experience. I'd like to learn a bit more to feed my curiosity, but also understand why he struggled the way he did post WW2.
Try the National Archives website. You should be able to find service records.
If your Grandmother is still alive she can request his records, otherwise it would have to be one of his children (your parent in other words). Expect a long wait, and not all records are available. When we requested my Grandad's records it took about 6 months, but definitely worth it.