To date, there are not so many people left who remember and saw with their own eyes the events of the Second World War, and you and I, the descendants, can only observe the events of those years from documentary chronicles, photographs, or from artistic paintings that were shot in Soviet Union or already in our time.
Surely, many of you have noticed how German soldiers appeared in newsreels with a proud expression on their faces, leisurely walking with an MP40 machine gun in their hands. And almost always their sleeves were rolled up to the elbow, while Soviet soldiers never did this.
What is the reason for such wearing of military clothes. I would like to note right away that in this situation we are not talking about any military traditions. It was all about the form itself.
The fabric from which the German uniform was sewn consisted of two-thirds of wool, the rest of viscose. The quality and characteristics of the appearance of the clothes were at a high level. In the cold season, in this form it was quite warm, but this plus turned into a minus at the same time. Heat transfer is disturbed in woolen products and because of this, it was very hot in a woolen military uniform in the warm season, unlike cotton clothes. Toward the middle of the war, the German uniform began to be sewn, it was from cotton, but the rolling up of the sleeves by the Wehrmacht soldiers on the tunic had already become a habit. Apparently, the charter did not prohibit such wearing of a military uniform, and the officers turned a blind eye to this. However, discomfort in warm weather is not the only reason for rolling up sleeves. We all know that natural wool is a rather prickly material, and those who have worn a wool sweater on their naked body at least once understand what is at stake and remember how the skin itches after that.
As for the soldiers of the Red Army, their uniforms were sewn almost entirely from cotton fabric, as a result of which it was much lighter and more practical. Cotton also breathed well, was a versatile fabric for heat and cold. Plus, the tunics of Soviet soldiers were distinguished by a special cut. The sleeves were slightly tapered, so rolling up the sleeves was quite difficult and impractical.
Source :
https://dzen.ru/media/id/5fdf902d0199050378ad334d/pochemu-nemeckie-soldaty-voevali-zasuchiv-rukava-60771d448fb1c273054dd6bb
https://en.wikipedia.org/wiki/File:German_troops_in_Russia_-_NARA_-_540156_(cropped).tif
