Karl Arthur Marlantes (born December 24, 1944) is an American author and Vietnam War veteran. He has written three books: *Matterhorn: A Novel of the Vietnam War* (2010), *What it is Like to go to War* (2011), and *Deep River* (2019).
**Source**: [Karl Marlantes](https://en.wikipedia.org/wiki/Karl_Marlantes) on Wikipedia.
