On the map of the Schmerzen fortress, there is a location called 'FG42 Tower'. The FG42 is an automatic weapon produced by Nazi Germany, not an anti-aircraft cannon.
In the Schmerzen Mission, there are .50 caliber gun emplacements. The only place that Nazi Germany used .50 caliber weapons in was in aircraft.
The Browning Automatic Rifle fired rifle rounds, not sub-machine gun rounds.
The Me-163 was rocket-propelled, not jet-propelled.
Tracer rounds were for the most part not used in small arms in the Second World War.
The term 'boy friend' was more used in 1945 than the term 'boyfriend'.
Having been introduced in 1943, the Panzerschreck was not a new weapon in 1945.