Jim Courtney was found as an infant on the doorstep of John Courtney, a crippled war veteran and flag maker. John discovered that Jim had an American flag birthmark. On his 21st birthday, Jim was visited by the spirits of George Washington and Abraham Lincoln and told that he had "the speed of the wind and the strength of a 100 men" as well as invulnerability to all weapons. He left a star-spangled trail behind him whenever he ran. His birthmark glowed whenever somebody called the Flag for help. Jim now uses these powers to fight the enemies of America.
If another person touches his birthmark, they can gain his powers.

Flag-Man went up against Herman Foxson, a wealthy industrialist who orchestrated a complex conspiracy in order to become a fascist dictator of United States. He used the newspapers he owned to weaken American morale and his mechanical plant to build the bombers, tanks and other war machinery. He got help from Sally Blair, a reporter for the Daily Clarion, one of the newspapers Foxson acquired to further his plan. Sally was the only reporter not to go along with Foxson's conspiracy, and, when Foxson and his co-conspirators were arrested, she became the managing editor of the Daily Clarion.

Later, a high compression bomb catches him unawares and he is left for dead, in a coma for two days. The ghosts of George Washington, Abraham Lincoln, and another appear and give him back his life and powers.

In ''Our Flag Comics'' #4, the Flag uncovers the twisted plot of Von Monsta, who kidnapped and brainwashed 200 infants to create super-strong soldiers. Among them is Number 40, who turns against his captors after realizing their cruelty. With the Flag’s help, Number 40 regains his true identity, and the hero brings Von Monsta’s plan to ruin while reuniting the lost man, Martin Benson, with his parents.

*Lightning Comics vol. 2 #3
*Our Flag Comics #2-5
*Four Favorites #6

*[http://www.internationalhero.co.uk/g/gaflag.htm International Hero]
*[https://comicvine.gamespot.com/flag/4005-17031/ Comicvine]
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