In August and September 1917, six Coast Guard cutters, Ossipee, Seneca, Yamacraw, Algonquin, Manning, and Tampa left the United States to join U.S. naval forces in European waters. They constituted Squadron 2 of Division 6 of the patrol forces of the Atlantic Fleet and were based at Gibraltar. Throughout the war they escorted hundreds of vessels between Gibraltar and the British Isles, as well as escort and patrol duty in the Mediterranean. The other large cutters performed similar duties in home waters, off Bermuda, in the Azores, in the Caribbean, and off the coast of Nova Scotia. They operated either under the orders of the commandants of the various naval districts or under the direct orders of the Chief of Naval Operations.
A large number of Coast Guard officers held important commands during World War I. Twenty-four commanded naval warships in the war zone, five commanded warships attached to the American Patrol detachment in the Caribbean Sea, twenty-three commanded warships attached to naval districts, and five Coast Guard officers commanded large training camps. Six were assigned to aviation duty, two of which commanded important air stations including one in France. Shortly after the Armistice, four Coast Guard officers were assigned to command large naval transports engaged in bringing the troops home from France. Officers not assigned to command served in practically every phase of naval activity, on transports, cruisers, cutters, patrol vessels, in naval districts, as inspectors, and at training camps. Of the 223 commissioned officers of the Coast Guard, seven met their deaths as a result of enemy action.
The cutter Tampa distinguished itself during the war. Under the command of Captain Charles Satterlee, she sailed from New York on 16 September 1917 for service in European waters. Tampa proceeded to Gibraltar via the Azores Islands and was assigned to a division of escorts convoying between Gibraltar and England. On 5 September 1918, Rear Admiral Niblack, commanding the U.S. naval forces based at Gibraltar addressed a special letter of commendation to Captain Satterlee. He called attention to the fact that Tampa, since her arrival, had escorted 18 convoys between Gibraltar and the United Kingdom, was never disabled, and was ready whenever called upon. Admiral Albert Niblack stated,
"This excellent record is an evidence of a high state of efficiency and excellent ship’s spirit and an organization capable of keeping the vessel in service with a minimum of shore assistance. The squadron commander takes great pleasure in congratulating the commanding officer, officers, and crew on the record which they have made." USCG video produced by Telfair H Brown