 Upon reaching Naval Station, Olongapo, Philippine Islands, he spent three months as captain of the yard.From June to November 1914, he commanded the distilling ship , which departed Manila Bay in July and surveyed the French Frigate Shoals, Hawaii, while "en route" to the Mare Island Naval Shipyard for decommissioning.As a lieutenant commander, Horne was assigned duty with the naval attaché in Tokyo, Japan before serving as naval attaché himself from January 15, 1915 to March 15, 1919.