Many vehicles captured from German forces, including at least three ambulances.
The tracked vehicle to the left is a Steyr 470/Steyr RSO full tracked prime mover
http://www.zuckerfabrik24.de/steyrpuch/steyrv8_2.htm
The small vehicle in the center is a Lanz Bulldog Type 22/38 PS Kühlerbulldog HR 6. Lanz was a manufacturer of agricultural tractors whose vehicles were manufactured for military use during the war.
http://en.wikipedia.org/wiki/Lanz_Bulldog
Between the ambulance and the open van is a EU (Renault) Infantry Schlepper EU 630 (F). This was the german designation for the Renault UE Chenillette, which was in effect the French equivalent to the Universal (Bren) Carrier.
http://en.wikipedia.org/wiki/Renault_UE_Chenillette
Note the car that seems to have been pressed into American service, and has a hastily drawn star painted on one door.