Think it is a new (at least for me): on 20 September 1944 an Allied battle group including part of 654th TD Bn was attacked in error by Allied fighter-bombers:
"At 1700 hours our fighter-bombers, through error, bombed and strafed positions held by the CP Group, Headquarters Company and Company "C". Also the 448th AAA Battalion. One AA gun was destroyed and the crew killed when a bomb made a direct hit on the gun. Sergeant Walston and Corporal Lehman of Company "C" were slightly wounded in this action.
"
Source:
http://654th.com/1944_sep_20.htm
The next day, units of 35th US Division were attackezd by P-47s:
"CCB 4th AD was attached to division at 211000A, moving from Luneville to assembly area in the vicinity of Jallaucourt. The 35th Division QM Company was bombed and strafed by our P47's in the vicinity of Harancourt. The same planes dropped one bomb in the vicinity of the division command post. "
Source:
http://654th.com/1944_sep_21.htm