Barbara, I tried to respond directly, however your email address does not show, it has the word HIDDEN over it.In any case, I was out to an aunt's house today who had some paper work on Michael Jurczak.The number you provided, 12099459, is the same number on the paperwork my aunt has, on Michael's Air Force Technical School Diploma, so it is the same Michael. What I know about him is he was killed in action on March 19, 1944 in Yugoslavia. His remains were not found for years, not until 1950 or 1951. We have a few snapshots of him but nothing very identifying. There is F1861 handwritten on the back of one of the pictures, but I haven't a clue what if anything that may mean. I'm curious, were you looking him up because he's related or were you hoping to find out his unit to help in your search of a different serviceman?