Marvel "true believers" grew up thrilling to the adventures of the mighty Thor, a Norse demigod who bashed supervillains from the Nine Realms with his Asgardian war hammer, Mjolnir. Later, millions of young geeks volunteered their services to the American armed forces, but some never lost their childhood love of comic book heroes.

For the last eight years, Marvel Entertainment has given back to the military community by offering limited-edition comic books exclusively to servicemembers through the Army & Air Force Exchange Service. This year, in 32 action-packed pages, writer William Harms and penciler Tom Grummett advance that tradition by launching Thor into battle against the bloodthirsty Frost Giant, Ymir. This special issue, "Deep Freeze," features a cover by Walt Simonson, a legendary artist whose efforts on Star Slammers, Thor, and Fantastic Four have been collector favorites for decades. Its frozen battleground: Stark Tower in New York City. Its all-too-mortal protagonist: former British airman Edwin Jarvis, now employed as a butler by that stalwart band of heroes, the Avengers. Excited yet?

The Army & Air Force Exchange Service offers quality services and merchandise at low prices, while funding operations in support of military morale, recreation, and welfare. "All of us at Marvel owe a debt of gratitude to our real heroes, the men and women of the U.S. Armed Forces," Marvel editor Bill Rosemann acknowledges. "(This is) the least we can do for the men and women who bravely fight for the freedoms we all hold so dear." Thor: Deep Freeze is suitable for kids six and older, and available free of charge to service members and their families at Joint Base Lewis-McChord.

Movie sequel Thor: The Dark World arrives on Blu-ray and DVD Feb. 25.