When the German officer is speaking to the French waiter in the bistro about jewels, the oyster he is holding and about to eat is held the wrong way around. Camera cuts and suddenly oyster is held correctly as the German eats it.
When B-24 Liberator bombers are shown opening their bomb bay doors, they open in the same manner as the B-17 "clamshell" type. Actually, B-24's had a double bomb bay whose 4 doors rolled up the sides like a segmented garage door or roll-top desk.
The series completely ignores how a low-powered civilian radio transmitter could have broken through radio interference in WWII German territory.