RE: 400th AAA AW Btn in France WWII
Since Phil hasn't responded, I think I can assure you that the "440" is a typo. The unit in question started out as the 2d Battalion/ 513th Artillery Regiment (Antiaircraft Artillery), Coast Artillery Corps, carried the number 200 for a couple of months in 1943 and has had the number 400 ever since (except for 1949 to 1952) -- at least until 1959, anyway.
Push the stick forward, the houses get bigger. Pull the stick back, the houses get smaller (unless you keep pulling -- then they get bigger again)