Julien;
A bit of a follow-up. The only other reference I've found to Allied troops in Tourcoing is that on 7 Sep 44, 227th Highland Infantry Brigade, 15th (Scottish) Division, mounted on T.C.V.'s, passed through Tourcoing on the route St. Pol-Lille-Tourcoing-Rubaix, to cross the frontier into Belgium at Moscrum. Have found no other references to Tourcoing in any Divisional History or Unit History or Diary.
Source - The History of the Fifteenth Scottish Division 1939-1945
Cheers