Specifically during the second world war, but any details of afterward are welcome as well
Yup. There's a famous female Soviet sniper who went around promoting US-soviet relations after the battle of stalingrad. She became best friends with Eleanor Roosevelt and they campaigned together. https://www.smithsonianmag.com/history/eleanor-roosevelt-and-the-soviet-sniper-23585278/
Also: "Pavlichenko was sent to Canada and the United States for a publicity visit and became the first Soviet citizen to be received by a US President when Franklin Delano Rooseveltwelcomed her to the White House. Pavlichenko was later invited by Eleanor Roosevelt to tour America relating her experiences. While meeting with reporters in Washington, D.C., she was dumbfounded about the kind of questions put to her. "One reporter even criticized the length of the skirt of my uniform, saying that in America women wear shorter skirts and besides my uniform made me look fat.""