Conversation so far:
What did Aleksandr Solzhenitsyn do in World War II?
During the war, Aleksandr Solzhenitsyn served as the commander of a sound-ranging battery in the Red Army, was involved in major action at the front, and was twice decorated.

Question: What else happened while he was in the war?
Self-contained rewrite: What else happened while Aleksandr Solzhenitsyn was in World War II?