Complex sentence: Coburn was reared in Compton, California, where he attended Compton Junior College and enlisted in 1950 in the United States Army, in which he served as a truck driver and an occasional disc jockey on an Army radio station in Texas.
Split into simpler sentences: Coburn was reared in Compton, California, where he attended Compton Junior College. In 1950 he enlisted in the United States Army, in which he served as a truck driver and an occasional disc jockey on an Army radio station in Texas.