was commissioned a second lieutenant and posted to the 30th Infantry on Marinduque. Krueger returned to the United States with the 30th Infantry in December 1903. The regiment moved to Fort Crook, Nebraska. In September 1904, he married Grace Aileen Norvell, whom he had met in the Philippines. They had three children: James Norvell, born on 29 July 1905; Walter Jr., born on 25 April 1910; and Dorothy Jane, who was born on 24 January 1913. Both James and Walter Jr. attended the United States Military Academy, James graduating with the class of 1926, and Walter Jr. with the class of 1931. Dorothy married an army officer, Aubrey D. Smith, of the class of 1930. In 1904, Krueger attended the Infantry-Cavalry School at Fort Leavenworth, Kansas, and upon completing the course was chosen as a Distinguished Graduate. This was followed by the Command and General Staff College in 1907. He then joined the 23rd Infantry at Fort Ontario, New York. After a second tour in the Philippines, he returned to the United States in June 1909, and was assigned to Department of Languages at Fort Leavenworth as an instructor in Spanish, French and German, which he could speak fluently. He also taught National Guard officers at Camp Benjamin Harrison, Indiana, and Pine Camp, New York. He published translations of several German military texts, most notably William Balck's Tactics. The book attracted the attention of the Chief of Staff of the United States Army, Major General Leonard Wood, and was widely read. World War I With the outbreak of World War I in August 1914, Krueger was offered a post as an observer with the German Army but was forced to turn it down due to familial commitments. Instead, he was posted to the 10th Infantry of the Pennsylvania Army National Guard. The regiment was mobilized on 23 June 1916 and served along the Mexican border for five months as part of the Mexican Punitive Expedition under Major General John J. Pershing, although no National Guard units fought Mexican troops. The unit was mustered out in October 1916. Afterwards, Krueger remained with the National Guard. He trained units, and helped establish a school for officers at the University of Pennsylvania. In an article in the Infantry Journal, he called for a large, national, conscript army similar to those of European countries, arguing that this would be in accord with America's democratic