Major Pavlychenko's first kills and presumably a great deal more of them were with an SVT-40 rifle; the story depicts her first sniper kills and all the rest presented in the movie to be with the Mosin Nagant rifle.
On at least two occasions during scenes in Washington, a man in Royal Air Force Uniform is seen in the background with the rank of Senior Aircraftman (a three bladed propellor). This rank was introduced in 1951, 9 years after the scenes took place.
At 13:15 when US fund raising girls walk into the hall (1942), a modern 2000's Hong Kong $20 note can be seen inserted into one of the boxes.
During one of the USA scenes in 1942, a billboard advertising the 2010 film True Grit can be seen.