One of the FFL partisans attempting to arrest Spatz is armed with a PPSh-41 submachinegun. Although it was used widely on the Eastern front by the Russian army virtually none of these weapons made it as far west as France.
Dior is walking back to his home from the meeting with Franz in the pouring rain. Across town, the FFR is entering the convent to arrest Dinklage and it is perfectly dry.