Complex sentence: That assignment lasted until 24 February 1946, when she headed back to the United States reporting to the Commandant, 12th Naval District, late in April 1946 for duty pending inactivation.
Split into simpler sentences: That assignment lasted until 24 February 1946, when she headed back to the United States. She reported to the Commandant, 12th Naval District, late in April 1946 for duty pending inactivation.