That is not a Nazi logo @ssjsasha. It is a red star associated with the old USSR/Russia (It is the emblem/logo of Bolshevism). It defines the budenovka, a distinctive type of hat, and an archetypal part of the Communist military uniforms of the 1917 - 1922 Russian Civil War pitting the Red Army and the White Army.
The war ended in 1923, with Lenin's Red Army defeating the white army in Ukraine and Siberia, effectively taking control of the newly formed soviet union.
Here are some links where you could look up more about it.
https://russianlegacy.com/budenovka-red-army-hat-p-1727.html
kinda did look familiar, remember it from Call of Duty Modern Warfare 2 .... oops lol