Its first combat and casualties occurred 29 April , when Capt .
The 56th FG sent its four most experienced pilots to Debden in early April 1943 to gain experience before the group 's first mission , which occurred 13 April 1943 .
FG 's first combat and casualties occurred 29 April , when Capt .
The 56th FG sent its four most experienced pilots to Debden in early April 1943 to gain experience before the group 's first mission , which occurred 13 April 1943 .