British infantry tank Matilda Mk. I from the 1st Tank Brigade.
The brigade consisted of the 4th and 7th Royal Tank Regiments (4.RTR and 7. RTR), covering the retreat of the English infantry to Dunkirk.
Source of information about the Matilda I photo:
1. M. Orlovsky. “Matilda Infantry Tank“
Location: France
Date: May 1940