Ostfront

Etymology
From 🇰🇲.

Noun

 * 1)  eastern front
 * 2)  eastern front (of a building)

Proper noun

 * 1)  the German eastern front in either of both World Wars (fighting mainly against Russia / the Soviet Union)
 * 2)  any campaign against the Soviet Union or Russia (e.g. during the Cold War or the Ukraine conflict)