Conversation so far:
What did Claude Auchinleck do between the world wars?
Claude Auchinleck attended the Staff College, Quetta between 1920 and 1921. He married Jessie Stewart in 1921.
What did Claude Auchinleck attend the Staff College, Quetta for?
The Command and Staff College is a Pakistani military training institution where officers receive staff training and education.
Are there any other interesting aspects about the Claude Auchinleck article besides marrying Jessie Stewart and attending the Staff College, Quetta?
Claude Auchinleck attended the Imperial Defence College in 1927 and was promoted to lieutenant-colonel.

Question: Who appointed him?
Self-contained rewrite: Who appointed Claude Auchinleck lieutenant-colonel?