United States Coast Guard replaces United States Revenue Cutter Service
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, multi-mission service unique among the United States military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. It is the largest coast guard in the world, rivaling the capabilities and size of most navies.
The U.S. Coast Guard is a humanitarian and security service. It protects the United States' borders and economic and security interests abroad; and defends its sovereignty by safeguarding sea lines of communication and commerce across U.S. territorial waters and its Exclusive Economic Zone. Due to ever-expanding risk imposed by transnational threats through the maritime and cyber domains, the U.S. Coast Guard is at any given time deployed to and operating on all seven continents and in cyberspace to enforce its mission. Like its United States Navy sibling, the U.S. Coast Guard maintains a global presence with permanently-assigned personnel throughout the world and forces routinely deploying to both littoral and blue-water regions. The U.S. Coast Guard's adaptive, multi-mission "white hull" fleet is leveraged as a force of both diplomatic soft power and humanitarian and security assistance over the more overtly confrontational nature of "gray hulled" warships. As a humanitarian service, it saves tens of thousands of lives a year at sea and in U.S. waters, and provides emergency response and disaster management for a wide range of human-made and natural catastrophic incidents in the U.S. and throughout the world.The U.S. Coast Guard operates under the U.S. Department of Homeland Security during peacetime. During times of war, it can be transferred in whole or in part to the U.S. Department of the Navy under the Department of Defense by order of the U.S. President or by act of Congress. Prior to its transfer to Homeland Security, it operated under the Department of Transportation from 1967 to 2003 and the Department of the Treasury from its inception until 1967. A congressional authority transfer to the Navy has only happened once: in 1917, during World War I. By the time the U.S. entered World War II in December 1941, the U.S. Coast Guard had already been transferred to the Navy by President Franklin Roosevelt.Created by Congress as the Revenue-Marine on 4 August 1790 at the request of Alexander Hamilton, it is the oldest continuously operating naval service of the United States. As Secretary of the Treasury, Hamilton headed the Revenue-Marine, whose original purpose was collecting customs duties at U.S. seaports. By the 1860s, the service was known as the U.S. Revenue Cutter Service and the term Revenue-Marine gradually fell into disuse.The modern U.S. Coast Guard was formed by a merger of the U.S. Revenue Cutter Service and the U.S. Life-Saving Service on 28 January 1915, under the Department of the Treasury. In 1939, the U.S. Lighthouse Service was also merged into the U.S. Coast Guard. As one of the country's six armed services, the U.S. Coast Guard has deployed to support and fight every major U.S. war since 1790, from the Quasi-War with France to the Global War on Terrorism.As of December 2021, the U.S. Coast Guard's authorized force strength is 44,500 active duty personnel and 7,000 reservists. The service's force strength also includes 8,577 full-time civilian federal employees and 31,000 uniformed volunteers of the U.S. Coast Guard Auxiliary. The service maintains an extensive fleet of roughly 250 coastal and ocean-going cutters, patrol ships, buoy tenders, tugs, and icebreakers; as well as nearly 2,000 small boats and specialized craft. It also maintains an aviation division consisting of more than 200 helicopters and fixed-wing aircraft. While the U.S. Coast Guard is the second smallest of the U.S. military service branches in terms of membership, the service by itself is the world's 12th largest naval force.History
The Coast Guard traced its roots to the small fleet of vessels maintained by the United States Department of the Treasury beginning in the 1790s to enforce tariffs (an important source of revenue for the new nation). Secretary of the Treasury Alexander Hamilton lobbied Congress to fund the construction of ten cutters, which it did on 4 August 1790 (now celebrated as the Coast Guard's official birthday). Until the re-establishment of the Navy in 1798, these "revenue cutters" were the only naval force of the early United States. As such, the cutters and their crews frequently took on additional duties, including combating piracy, rescuing mariners in distress, ferrying government officials, and even carrying mail. Initially not an organized federal agency at all, merely a "system of cutters," each ship operated under the direction of the customs officials in the port to which it was assigned. Several names, including "Revenue-Marine," were used as the service gradually becoming more organized. Eventually it was officially organized as the United States Revenue Cutter Service. In addition to its regular law enforcement and customs duties, revenue cutters and their crews were used to support and supplement the Navy in various armed conflicts including the American Civil War.A separate federal agency, the U.S. Life-Saving Service, developed alongside the Revenue-Marine.  Prior to 1848, there were various charitable efforts at creating systems to provide assistance to shipwrecked mariners from shore-based stations, notably by the Massachusetts Humane Society. The federal government began funding lifesaving stations in 1848 but funding was inconsistent and the system still relied on all-volunteer crews. In 1871, Sumner Increase Kimball was appointed chief of the Treasury Department's newly-created Revenue Marine Division, and began the process of organizing the Revenue-Marine cutters into a centralized agency. Kimball also pushed for more funding lifesaving stations and eventually secured approval to create the Lifesaving Service as a separate federal agency, also within the Treasury Department, with fulltime paid crews.
In 1915 these two agencies, the Revenue Cutter Service and the Lifesaving Service, were merged to create the modern United States Coast Guard. The Lighthouse Service and the Bureau of Marine Inspection and Navigation were absorbed by the Coast Guard 1939 and 1942 respectively.
In 1967, the Coast Guard moved from the U.S. Department of the Treasury to the newly formed U.S. Department of Transportation, an arrangement that lasted until it was placed under the U.S. Department of Homeland Security in 2003 as part of legislation designed to more efficiently protect American interests following the terrorist attacks of 11 September 2001.In times of war, the Coast Guard or individual components of it can operate as a service of the Department of the Navy. This arrangement has a broad historical basis, as the Coast Guard has been involved in wars as diverse as the War of 1812, the Mexican–American War, and the American Civil War, in which the cutter Harriet Lane fired the first naval shots attempting to relieve besieged Fort Sumter. The last time the Coast Guard operated as a whole within the Navy was in World War II, in all some 250,000 served in the Coast Guard during World War II.Coast Guard Squadron One, was a combat unit formed by the United States Coast Guard in 1965 for service during the Vietnam War. Placed under the operational control of the United States Navy, it was assigned duties in Operation Market Time. Its formation marked the first time since World War II that Coast Guard personnel were used extensively in a combat environment. The squadron operated divisions in three separate areas during the period of 1965 to 1970. Twenty-six Point-class cutters with their crews and a squadron support staff were assigned to the U.S. Navy with the mission of interdicting the movement of arms and supplies from the South China Sea into South Vietnam by Viet Cong and North Vietnam junk and trawler operators. The squadron also provided 81mm mortar naval gunfire support to nearby friendly units operating along the South Vietnamese coastline and assisted the U.S. Navy during Operation Sealords.Coast Guard Squadron Three, was a combat unit formed by the United States Coast Guard in 1967 for service during the Vietnam War. Placed under the operational control of the United States Navy and based in Pearl Harbor. It consisted of five USCG High Endurance Cutters operating on revolving six-month deployments. A total of 35 High Endurance Cutters took part in operations from May 1967 to December 1971, most notably using their 5-inch guns to provide naval gunfire support missions.Often units within the Coast Guard operate under Department of the Navy operational control while other Coast Guard units remain under the Department of Homeland Security.