The Invaders is the name of a fictional superhero team in the Marvel Comics universe. The original team was created by writer Roy Thomas and artist Sal Buscema in The Avengers vol. 1, #71 (December 1969).
The Invaders team first appeared in flashback stories set during World War II, and comprised existing characters from Timely Comics, the 1940s predecessor of Marvel. Originally, Captain America (Steve Rogers), his sidekick Bucky (James Barnes), the original android Human Torch ("Jim Hammond"), the Torch's sidekick Toro (Thomas Raymond), and Namor the Sub-Mariner were together as heroes opposing the forces of Nazism. When these superheroes saved the life of British Prime Minister Winston Churchill from Master Man, the thankful Churchill suggested that they should become a team, known as the Invaders.
The Invaders fought the Axis Powers over the world until eventually finding themselves in England, where they met Lord James Montgomery Falsworth, the original Union Jack. He joined the team and provided them with a base of operations in England. Eventually Falsworth's children Brian (Union Jack) and Jacqueline (Spitfire) became members. The team later added Miss America (Madeline Joyce) and super-speedster the Whizzer (Bob Frank), during a battle with the Super-Axis. Later, against the threat of the Battle-Axis, the team added the Blazing Skull and the Silver Scorpion to its roster.
After the Invaders' introduction in the pages of The Avengers, the team appeared in its own try-out title, Giant-Size Invaders #1 in 1975, followed by the ongoing series The Invaders later that year, and a single annual in 1977. The series ran for 41 issues.