Assigned to operate as part of the Otranto Barrage in the Strait of Otranto between Brindisi, Italy, and Corfu, S.C. 95 arrived at Corfu on 5 June 1918, as part of a convoy consisting of 21 submarine chasers and their mother ship, the former collier and survey ship USS Leonidas.

[2] Unit G was operating in the Otranto Barrage on 18 June 1918, when it gained sound contact on a Central Powers submarine at 17:29.

[7] In March 1919, S.C. 95 was among 12 submarine chasers selected for service in the White Sea in North Russia as part of the Allied intervention in the Russian Civil War.

After a calling at Milford Haven, Wales, they skipped a planned stop at Belfast, Ireland, and began a two-day transit of Scotland′s Caledonian Canal, spending a night at Fort William before arriving at Base 18 at Inverness on 24 April 1919, and beginning final preparations for North Russia service.

[9] They received orders to proceed to Russia on 7 May 1919, but numerous delays followed when their assigned flagship, the protected cruiser USS Des Moines, arrived at Brest from the Pacific Ocean in a disabled condition and in need of significant repairs and the British tanker HMS Elerol, assigned to refuel them on their voyage, suffered damage in a collision.

[11] Accompanied by the British tanker HMS Birchol, the three submarine chasers departed Inverness on 6 June 1919.

They then proceeded northward along the coast of Norway via inland passages created by islands and fjords,[12] sometimes under sail to save fuel.

On 15 June 1919, they rendezvoused off the Kola Inlet with the steam schooner USS Yankton, which passed orders to them to skip a planned stop at Murmansk and proceed directly to Arkhangelsk.

Under escort by Yankton, the three submarine chasers headed into the White Sea along the coast of the Kola Peninsula, sometimes crawling through heavy fog.

[18] On 4 July 1919, the crews of the ships of the Northern Russia Detachment took part in a showcase celebration of Independence Day on Kego Island in the Dvina River delta.

According to one source, after completion of the minesweeping operation, she was among six submarine chasers which received orders on 4 September 1919, to proceed to Devonport, England.

[28] When their repairs were complete, the submarine chasers began a voyage to the United States, each under tow by a minesweeper and accompanied by Panther.