September 1939: french R-35 tanks (5th BCC) in the Warndt forrest, during the short-lived offensive in the Sarre under the command of général Louis Faury.

French tanks entering Germany 1939

Oderen, Haut-Rhin département, Alsace region, North-East France, december 1944.
Two french officers of the Pommies Corps-Franc. They both wear french helmets for motorized troops. The one on the left has a german white coat and a apparently a british sten gun. The one on the right has a US overcoat and a german walther handgun. 
The Pommies Corps-Franc (from the name of his chief, André Pommies) was a fighting resistance group of South-West France. Numbering 3000 fighters in june 1944, they led a guerilla war against the Germans before heading North and being integrated in the 1st armored division. They fought in the Vosges, in Alsace and in Germany, and ended the campaign in Stuttgart as a regular infantry regiment.   

Officers from the Resistance

9th september 1939: french soldiers of the 42th infantry division in the german village of Lauterbach in the Sarre, during the short-lived offensive in the region. The offensive was decided by headquarters on the 7th, and the troops entered germany the 9th.