In WWII movies and in some books I have noticed that Germans refer to Russians in general as "Ivans." Were there nicknames for other nationalities and by other fighters?

by cincilator

What did the e.g. British called Germans or vice versa?

BRIStoneman

Probably the most common British slang for Germans was (and still is) ''Jerry" or "Jerries". "Huns" or "The Hun" was also used, but was more of a First World War phenomenon. The French term 'Boche' was also borrowed heavily. The derogatry term "Squarehead" was also used, in reference to the shape of German steel helmets.