What was a primary tactic used by Marines in the Pacific during WWII?

Island hopping was a crucial tactic employed by Marines in the Pacific during World War II, aimed at capturing strategic islands and using them as bases for advancing closer to Japan. This approach allowed the U.S. military to bypass heavily fortified islands, effectively cutting off Japanese forces and supply lines, while establishing airfields and supply stations on captured islands. The tactic maximized efficiency by focusing on key locations that would provide a strategic advantage in the upcoming battles.

The other tactics mentioned were less relevant to the Marine strategy in the Pacific. Submarine warfare was primarily conducted by the Navy and focused on disrupting Japanese supply routes. Air superiority campaigns were part of broader strategies but were not the primary tactic used by ground forces such as the Marines. Trench warfare is more associated with World War I and was not applicable to the island battles characterized by mobility and amphibious assaults in the Pacific theatre.