Conversation so far:
What did Phillip Sheridan do postbellum?
Philip Sheridan was promoted to lieutenant general
what did Phillip Sheridan do after becoming lieutenant general?
Philip Sheridan was sent observe and report on the Franco-Prussian War

Question: what else was he doing in this time
Self-contained rewrite: what else was Philip Sheridan was doing in the time when he was sent observe and report on the Franco-Prussian War?