Hi Nick. I think Krefeld is possible as he was stationed there; it was captured by 84 Div. on March 2 and in May-June used for collection and destruction of LW aircraft. On 5th March Krefeld was 84 Div. Command Post as A1704, this was XIII Corps (Ninth Army) attached to the British 21st. Army Group. This is a March document with movements.
The 84th link shows attached units including AA artillery etc. which could have relevence to Mike's original post.
Krefeld had a satellite field nearby which might have stored abandoned aircraft.
Regards
Nick
https://history.army.mil/documents/eto-ob/84ID-ETO.htm
https://tile.loc.gov/storage-service...1/cs000274.pdf