Complex sentence: Herbert was a general science and English major at the University of Wisconsin-La Crosse who was interested in drama, until his career as an actor was interrupted by World War II when he enlisted in the United States Army as a private.
Split into simpler sentences: Herbert was a general science and English major at the University of Wisconsin-La Crosse who was interested in drama. His career as an actor was interrupted by World War II when he enlisted in the United States Army as a private.