Pearl Harbor is a harbor on the island of O'ahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the U.S. Pacific Fleet.
World War II
On December 6th-7th, 1941, the Imperial Japanese navy conducted a surprise military strike on Pearl Harbor, galvanizing the entire nation into officially entering World War II. Most of the neophyte mystery men active at this time were unable to respond to the attack, owing largely to the machinations of the time traveling super-villain Per Degaton. One retired hero, Rod Reilly, formerly known as Firebrand had enlisted in the U.S. Navy and was injured, along with his friend Slugger Dunn, in a strafing run during the attack. Rod's sister, Danette eventually honored his memory by taking up the mantle of Firebrand. 
In response to the attack, the mysterious spirit of liberty known as Uncle Sam established the Freedom Fighters and accompanied them to Pearl Harbor in a heroic rescue effort. Although the battle took a heavy toll on the Freedom Fighters, most of them survived, with the only true casualty being the little-known hero, Magno. 
American President Franklin Delano Roosevelt took decisive action to bring America into the war. He instructed members of the Justice Society of America to gather every active American super-hero they could find to form an All-Star Squadron that would answer directly to the President.
Several years ago, Aquaman created a massive tidal wave that flooded Pearl Harbor just to get the attention of a military commander named Admiral Strom, whom possessed intimate knowledge of Aquaman's surrogate mother, Porm. This incident prompted a fight between Aquaman and Hawaii's resident super-hero Superboy. Strom, in league with an alien race known as the Annunake was also responsible for setting Aquaman to fight against Charybdis, a battle that cost Aquaman his left hand. Following the flood, Strom used his resources to make sure that no official record existed concerning Aquaman's attack against Pearl Harbor. 
A few years later, a group of Furries from the secret island known as the Wild Lands launched their own attack against Pearl Harbor. The architect behind this attack was the bat-woman known as Nosferata who had aligned herself with an army of gorilla soldiers. Nosferata's bat-winged servants air-dropped the gorilla soldiers onto the base where they came into conflict with the super-heroes Guardian and Superboy. Assisting the heroes in repelling Nosferata's attack were the Wild Men. The heroes succeeded and the ape aggressors were apprehended.