Conversation so far:
where was the first major battle for african american troops in the union army
The Siege of Port Hudson was the first major battle where african american troops from the 1st Louisiana Native Guard fought.
can you tell me about the 1st Louisiana Native Guard
The 1st Louisiana Native Guard was one of the first all-black regiments to fight in the Union Army during the American Civil War.
where was the 1st Louisiana Native Guard based
The 1st Louisiana Native Guard was based in New Orleans, Louisiana.
who was in the 1st Louisiana Native Guard
The members of The 1st Louisiana Native Guard included a minority of free men of color from New Orleans; most were African-American former slaves who had escaped.

Question: when was the guard active
Self-contained rewrite: when was the 1st Louisiana Native Guard active