My grandfather was in the 431st. AAA AW, before he died my father interviewed him about where he want and what he did. We also have a book that was written by somebody about where and what they did during world war 2. They were at the Kaiser Hotel near Salzburg Austria when the war ended, then went to france for a while before returning home. I have a lot more information about what they did, though I am not sure what battery my grandfather was in. Email me if you need more information.