Complex sentence: Detroit surrendered without a fight to British troops during the War of 1812 in the Siege of Detroit, was recaptured by the United States in 1813 and incorporated as a city in 1815.
Split into simpler sentences: Detroit surrendered without a fight to British troops during the War of 1812 in the Siege of Detroit. It was recaptured by the United States in 1813 and incorporated as a city in 1815.