Conversation so far:
How was Pete Rose's rookie season?
He hit .273 for the year and won the National League Rookie of the Year Award, collecting 17 of 20 votes.
What else did he do that year?
Rose entered the US Army Reserves after the 1963 baseball season.

Question: What did he do in the reserves?
Self-contained rewrite: What did Pete Rose do in the US Army reserves?