Hello, I've always been told by family that my great-grandfather Fred Achterberg served during WWII. The family story is that he was one of few survivors of the first few waves at Omaha. He died when I was young, so I never really got to ask him any questions. What I have found: His enlistment record. It says he was drafted in Los Angeles California. I have his service number... and not much else. It also says "Branch Immaterial - Warrant Officers, USA." What does that mean? How do I find what battalion he was in? If he even was at Omaha? I've tried my digging through the military records, but sadly it looks like his record was one of the ones lost in the fire in the 70's... Can anyone help? I want to learn more about him, no one else seems to know too much. He's someone I'm proud of and I want to be able to remember the facts correctly for my family in the future. Any help would be appreciated.