I can think of only two publications that may shed some light on this subject:
- the War Diary, quoted by Clive:
Reference: RG24 , National Defence , Series C-3 , Volume 16212
Serial : 949 , Access code: 90
File Title: No. 2 Tank Troops Workshop, Corps of Royal Canadian Electrical and Mechanical Engineers
Outside Dates: 1944/03-1945/08 Finding Aid number: 24-60
and a publication that is due to be published later this year, which is the volume of the history of the Royal Regiment of Artillery, which deals with the Field Regts in the campaign in North-West Europe, 1944-45.
Or by finding someone in the area of either Audrieu or Ryes, who can still remember August, 1944, and who and what was where.
Cheers