"Fairfax" arrived at Hampton Roads 6 June 1918 for convoy escort duty out of Newport News. She guarded convoys of troop transports to midocean meeting points with escorts who had come out of English and French ports to meet them. "Fairfax" also guarded convoys moving between coastal ports, and patrolled off the coast until 16 October, when she stood down Hampton Roads bound for Brest, France, escorting a troop convoy. On 18 October, she left her convoy to rescue 86 survivors of torpedoed , a Naval Overseas Transport Service ship, and on 27 October, arrived at Brest for patrol and escort duty in European waters.