There are roughly 5000000 superheroes (give or take) in the public domain who base their entire personality on loving America... and of those heroes, about 5 of them are actually fun to talk about. Man of War is one of them!
Unlike most heroes, this Man of War isn't strictly speaking a human. During World War II, Mars (Roman God and global conflict fanboy) saw this fighting between the humans and was so impressed that he decided to send down a hero of his own creation to aid one of the sides during the war... unfortunately, the side Mars was rooting for was the Nazis.
Fortunately, however, Mars didn't account for Earth's rotation, so Man of War ended up landing in good ol' America instead, whereupon he learned that the Nazis weren't the best people. From this day on, he would aid the Americans in their fight against the Nazis.
Like most heroes of the time, he had some amount of super strength and damage resistance, but he was also uniquely equipped with a magical flaming sword that could cut through anything (including tanks!).
Man of War didn't live long (only appearing in 5 issues total), but he has found himself being bought back a few times, with a rebooted version of the character in the 90s by Malibu Comics, and a more comedic version of the character showing up in the webcomic "Everything Will be the Same Ever Again".