Army established itself in San Juan. The Army Appropriation Bill created by an Act of Congress on March 2, 1889 authorized the creation of the first body of native troops in Puerto Rico. On June 30, 1901, the Porto Rico Provisional Regiment of Infantry was organized. On July 1, 1901, the United States Senate passed a bill that required a strict mental and physical examination for those who wanted to join the regiment. Under the provisions of an act of Congress approved April 23, 1904 and of Circular No. 34, War Department, July 29, 1904, the recruitment of native Puerto Rican civilians to be appointed the grade of second lieutenants for a term of four years was approved with the condition that they pass the required tests. Although many civilians from all walks of life applied for the officers appointment in January 1905, only seven made it that day, and one of those seven was Teófilo Marxuach, who had from 1903 to 1905 worked as a civil engineer for the Porto Rico regiment in the Aqueduct of Cayey. On March 3, 1905, he was commissioned with the rank of second lieutenant. An act of Congress, approved on May 27, 1908, reorganized the regiment as part of the "regular" Army. Because the native Puerto Rican officers were Puerto Rican citizens and not citizens of the United States, they were required to undergo a physical examination to determine their fitness for commissions in the regular army and to take an oath of U.S. citizenship with their new officers' oaths. In June 1908, Lt. Marxuach and all the others passed. He was assigned to the unit in charge of the Progressive Military Map of Puerto Rico from July 12, 1908 to December 4, 1908, during which time he was promoted to the rank of first lieutenant. The first shot of the United States in World War I The United States tried to remain neutral when World War I broke out in August 1914. However, Washington insisted on its neutral right to send ships without them being attacked by German submarines. American ships carried food and raw materials to Britain. By January 30, 1908, the Porto Rico Regiment of Infantry was stationed at Camp Las Casas in Santurce, San Juan, Puerto Rico. Different units were stationed at other forts throughout the island and Lt. Marxuach was stationed at El Morro Castle, (then an Army