Conversation so far:
When did Albert Sidney Johnston decide to join the confederacy?
Johnston's appointment as a full general by his friend and admirer Jefferson Davis already had been confirmed by the Confederate Senate on August 31, 1861
Why did Albert Sidney Johnston join the confederacy?
Albert Sidney Johnston heard about the secession of his adopted state of Texas

Question: Where was his first battle in the civil war?
Self-contained rewrite: Where was Albert Sidney Johnston's first battle in the civil war?