U.S. Coast Guard Birthday

U.S. Coast Guard Birthday, observed on August 4, honors the founding of the U.S. Coast Guard and the dedicated people who have served in its ranks. The service traces its origins to August 4, 1790, when Alexander Hamilton helped establish the Revenue-Marine, a maritime organization that later became part of the modern Coast Guard.

The observance is an opportunity to recognize the Coast Guard’s vital role in protecting lives, enforcing maritime law, safeguarding the nation’s waters, and supporting communities during emergencies. On August 4, people can celebrate the service’s long history and express appreciation for the courage, commitment, and readiness of Coast Guard members—past and present.

The U.S. Coast Guard Birthday is observed on **August 4**, commemorating the founding of the service’s earliest predecessor. On August 4, 1790, Treasury Secretary Alexander Hamilton persuaded Congress to authorize a fleet of revenue cutters to enforce federal customs laws and protect government revenue. President George Washington approved the measure, creating what became known as the Revenue Cutter Service. Although its original mission centered on customs enforcement, the cutters also performed maritime law enforcement, rescue, and national-defense duties.

Over time, the responsibilities associated with the Revenue Cutter Service expanded. In 1915, the Revenue Cutter Service merged with the U.S. Life-Saving Service, creating the modern United States Coast Guard. The new organization combined revenue enforcement with lifesaving, maritime safety, and assistance to people in distress. Its role grew further through later additions and transfers, including the Lighthouse Service in 1939. These developments helped establish the Coast Guard as a uniquely broad maritime service responsible for both military and civilian missions.

The August 4 observance reflects this long institutional history rather than commemorating only the Coast Guard’s modern organizational form. The date connects today’s service to the 1790 legislation that began the federal government’s sustained maritime presence. During times of war, the Coast Guard has operated as part of the nation’s armed forces, while in peacetime it has continued missions such as search and rescue, port security, navigation safety, environmental protection, and drug-interdiction operations.

Culturally, the U.S. Coast Guard Birthday recognizes the service’s tradition of combining military readiness with humanitarian assistance. Ceremonies and commemorations on **August 4** often honor Coast Guard personnel, veterans, and the families who support them, while also recalling the service’s enduring motto, “Semper Paratus,” meaning “Always Ready.” The observance therefore serves both as a celebration of the Coast Guard’s founding and as a reminder of its continuing responsibilities on American waters and beyond.