Major General Samuel W. Koster

https://en.wikipedia.org/wiki/Samuel_W._Koster

Samuel William Koster (December 29, 1919 – January 23, 2006) was a career officer in the United States Army. He attained the rank of major general, and was most notable for his service as commander of the Americal Division and Superintendent of the United States Military Academy. A veteran of World War II, the Korean War, and the Vietnam War, Koster was slated for promotion to lieutenant general before receiving a reduction in rank to brigadier general and retiring as a result of his efforts to minimize the details of the My Lai Massacre.

https://www.nytimes.com/2006/02/11/us/gen-sw-koster-86-who-was-demo...