Complex sentence: Sergeant Major Wilbur Bestwick, the first Sergeant Major of the Marine Corps, was born on 27 November 1911, in Sabetha, Kansas, and graduated from high school there in 1932.
Split into simpler sentences: Sergeant Major Wilbur Bestwick was the first Sergeant Major of the US Marine Corps. Bestwick was born on 27 November 1911, in Sabetha, Kansas, and graduated from high school there in 1932.