Born in Philadelphia, Pennsylvania in 1877. Served in the Spanish-American War in the 7th US Volunteer Infantry (California) and the 40th US Volunteer Infantry. After the war he remained in the Philippines and served in the Philippine Constabulary(1903-1911). He was awarded the highest valor medal, the Medal of Valor for the Philippine Army, for his actions in the Southern Philippines in 1907.

A book, "Blades in the Sun: The Untold Story of Legendary Philippine Constabulary Officer Leonard Furlong" remembers his life. About the book and his life: In 1935 at the behest of Charles Wellington Furlong, Vic Hurley was asked to write the biography of his younger brother, Captain Leonard Furlong, the legendary Philippine Constabulary Officer. It took close to thirty years for Hurley to write but neither man could find a publisher. After Hurley’s death in 1978 the draft languished in a box with his sister-in-law, and then in 2011, one hundred years and one day after the death of Leonard Furlong it was brought back into the light. With the approval and support of Vic Hurley’s niece this long-abandoned book is now published with extensive supplementary notes and period photographs. It draws on Hurley’s own experience in the Philippines to provide a comprehensive context for Leonard Furlong’s combat in the Philippines. It incorporates facts from the records and letters of Charles Wellington Furlong and family photographs to document Leonard Furlong’s early years. The book also draws on military records to describe in detail Furlong’s combat experiences in the Philippines and, perhaps most significantly, details and provides arguments about the circumstances that led to his tragic demise on July 9th, 1911, at thirty-three years of age.
Source: Find a Grave; and, https://www.omsa.org