This Marine scared off a Japanese cruiser with a mortar
He was so good, in fact, that the hard-charging Leatherneck took on a Japanese cruiser at Guadalcanal by himself and forced it to withdraw.
After joining the Corps during World War I, Diamond quickly made a name for himself as a Marine’s Marine. He was known for walking around without his cover, wearing his dungarees most of the time and for having a loud and dirty mouth.
You can read more about Leland “Lou” Diamond and his skill with the mortar here.