Prelude to the Spanish–American War for the
5th Infantry Regiment. In May 1891, changes were made to the disposition of the various companies of the
5th Infantry Regiment. The companies at first were dispersed to
St. Augustine,
Jackson Barracks, and
Mount Vernon Arsenal; however, later that year two more companies were transferred elsewhere, with one moving to
Fort Sam Houston and the other to
Fort Leavenworth. Sigerfoos was stationed at Fort Leavenworth by January, 1893. It was at this time that a local newspaper interviewed him on the subject of military training and the various schools on the post. He was found to be "unusually handsome and intelligent." He went through the United States Infantry and Cavalry School, located on the post, and completed the course as an honor graduate in 1895. Sigerfoos was left in charge of the post for an unspecified period of time. He had with him a detachment of two men from each company and men from the
signal corps, with orders to guard the fort's property and protect the officers' families. Sigerfoos was promoted to
first lieutenant on April 26 after the
war began. The depot battalion, the 3rd battalion, left Cuba for
Fort Sheridan on September 21 of that year. By the time the entire regiment left Cuba, it lost two officers and seventy-four enlisted men to a variety of tropical diseases.
Philippine–American War and Occupation of the Philippines Sigerfoos enjoyed a brief respite in
Illinois before his regiment embarked on another tour of duty overseas. In early February, 1900, Sigerfoos was appointed recorder for an army retiring board that was to meet in Chicago under the command of
assistant judge advocate-general Thomas F. Barr." He was appointed to serve on another board later that month. Scheduled to meet at
Fort Sheridan, the purpose of this board was to examine candidates for the
United States Military Academy. Elements of the regiment began to leave for the
Philippines in late August 1900, with the entire regiment in the islands by that winter. During its service in the
war, the
5th Infantry Regiment was actively pursuing forces of the
Philippine Republican Army. The companies and various detachments of the regiment marched a total of over 15,426 miles and engaged in thirty-eight skirmishes and minor actions before hostilities ended in July, 1902. The proceedings of this case, along with nine other murder trials in which Sigerfoos served as judge-advocate, was published in an extensive rebuttal by the
War Department in response to allegations that the United States military was committing atrocities against Filipinos during the war. The War Department called the allegations "either unfounded or grossly exaggerated." ==Military service after 1900==