During World War II, Stonewall fought against the Axis powers which dominated Europe. He fought alongside three other heroes during this time - Crimson Commando, Super Sabre, and Yankee Clipper. Following the war Stonewall along with Super Sabre and the Commando continued to fight crime. They even hoped to join the Human Torch in fighting communists, but government officials were concerned that the over enthusiastic heroes would cause a real war. The government requested that the trio retired, which they reluctantly did.
Hamilton, Super Sabre, and the Commando returned to America. When they arrived home they were disturbed by the criminal acts of people who thought they were "above the law". Finally deciding to do something they came out of retirement and would kidnap criminals and hunt them for sport. Later they accidentally captured Storm and realized that she was not a criminal. Faced with this dilemma they decided to hunt down Storm in order to keep their whereabouts a secret. Storm was also captured with another prison while they were hunted. Priscilla Morrison, who was in fact their actual target. Morrison betrayed Storm, but before she could kill Storm the Commando was able to kill her. Storm and the Commando then fought in combat, which she won. After she won she demanded that Commando and Stonewall turn themselves in. Distraught because they thought Super Sabre was dead, they complied and turned themselves in. Months later Valerie Cooper arranged for the release of the Commando and Stonewall if they joined Freedom Force. They reluctantly agreed. Super Sabre turned up alive and also joined the Freedom Force.
Stonewall and Freedom Force later worked with the X-Men against a cosmic entity known as the Adversary, but their attempts to enforce the government policy, the Mutant Registration Act, later led to battles with X-Factor and the New Mutants. Months later during a mission on Muir Island the Freedom Force faced off against the Reavers. During this confrontation Stonewall was electrocuted and killed by Donald Pierce. His comrades Super Sabre and Crimson Commando buried him in an undisclosed location.
Years later Wolverine visited the afterlife and was attacked by several of his dead foes, among them Stonewall, Pyro, and Super Sabre. Wolverine began to fight the dead villains until Colossus appeared to help Wolverine defeat them.
Recently, Selene revived Stonewall and his former teammate Super Sabre using a mixture of magic and the alien techno-organic virus on the island of Genosha. Selene sent Stonewall and Super Sabre to attack the X-Men on their new island of Utopia. He was last seen fighting against Colossus.
It is unknown whether he was one of the infected and revived who survived or if he was destroyed.