I am researching my grandfather's WWII service. All I have is a very bad copy of his (what is now referred to as) DD-214. From that document, I could ascertain that he was part of the 146th AAA OPNS DET. He got to the Pacific Theater on 14 September 1943 and was shipped home on 5 December 1945. He served in New Guinea, Northern Solomans, and the Southern Philippines. However, I am trying to figure out exactly where the 146th AAA OPNS DET. was during this time-frame and I can't find much information on the internet. Does anyone have any additional information on this unit? Alternatively, do you have any suggestions on where I might look to research this? I've done a FOIA request to the Army and NARA, but I doubt they will get me any information on this unit and/or the unit's service record. So I'm stuck at this point and could use some suggestions. Thank you in advance!