What was the mission in the Marines' first amphibious landing?

The mission of the Marines' first amphibious landing was specifically to seize arms and ammunition for General Washington's Army. This operation took place during the Revolutionary War when the Continental Marines were tasked with aiding the fledgling American forces against British rule.

In this context, the amphibious landing was essential for gathering much-needed supplies—arms and ammunition—to bolster Washington's troops. This mission exemplified the early emphasis on naval and land coordination that would characterize Marine operations throughout history. Securing weapons and ammunition directly supported the immediacy of the conflict, aiming to enhance the combat effectiveness of the Continental Army in its struggle for independence. This historical undertaking laid the groundwork for the Marine Corps' long-standing capability and effectiveness in amphibious operations, which remain a hallmark of their mission profile today.