I read a moving anecdote, years ago, of when an American Patrol linked up with their Soviet Counterparts, in the last days of WW II, in Europe. Suddenly, a shot rang out, and a Russian was killed, by a sniper. An American jumped into the ditch, where the soldier fell, and grabbed his version of “dog tags”.
The Soviets were clearly puzzled, and asked the G.I. what he was doing. “His family must be notified, that he was killed, in battle”, came the reply. The Russians threw the dog tags back onto the body, and said “When the war is over, and he does not come home, his family will know, that he was killed”.