Captain America 354 is a comic book issue that was published by Marvel Comics in August 1989. It is part of the long-running Captain America comic book series, which features the adventures of Steve Rogers, the patriotic super-soldier known as Captain America.

In this issue, Captain America is on the trail of a terrorist group called the Watchdogs, who are targeting individuals they deem to be un-American. The Watchdogs have kidnapped a group of people, including Cap’s ally and love interest, Diamondback.

Cap teams up with a new ally, a former Watchdog member named John Walker who has taken on the mantle of Captain America in the wake of Steve Rogers’ temporary retirement. Together, they must rescue Diamondback and stop the Watchdogs’ plans.

The issue is notable for several reasons, including the introduction of John Walker as the new Captain America. This would set up a long-running storyline in which Rogers and Walker would both use the Captain America identity, with different interpretations of what it meant to be a hero.

The issue was written by Mark Gruenwald, with artwork by Kieron Dwyer and Al Milgrom. It was generally well-received by critics and fans, who praised the action-packed storyline and the introduction of the new Captain America.

Captain America 354 remains a popular and collectible issue among comic book fans, particularly those who are fans of the Captain America character and his long history in the Marvel Universe.