Captain Commando was created by Alex Blum and S.M. Iger and debuted in Issue #30 of Pep Comics, August 1942.
For Impact Comics re-imagining see Captain Commando page.
Origins
MLJ/Archie

John Grayson was a Naval Commander that in secret wore the identity of Captain Commando. As Captain Commando he and The Boy Soldiers, a team of young boys helping with the war efforts, fought Nazi’s behind the lines inspiring soldiers and civilians at home.
At difference of later incarnations, the original Captain Commando never joined the Mighty Crusaders.
Powers and Weapons
Captain Commando was a well trained soldier thus specialized in hand to hand combat and various weapons. He was also a tactician and had skills in Leadership.