, six kilometers from
Ypres,
Belgium, September 1, 1918. Upon the
American entry into World War I, in April 1917, Tyson applied to return to active military duty, and was appointed brigadier general over all Tennessee National Guard troops by Governor
Tom C. Rye. This commission was subsequently federalized by President
Woodrow Wilson. Tyson was assigned to the command of the 59th Brigade in succession to Brigadier General
William S. Scott, part of the
30th "Old Hickory" Division, and helped train the brigade (composed of the
117th and
118th Infantry Regiments and the 114th Machine Gun Battalion) at Camp Sevier near
Greenville, South Carolina. Tyson temporarily commanded the entire division three times during his service with the 30th: from December 22−28, 1917, from March 30 to April 7, 1918, and from January 12−15, 1919. After several more months of training, Tyson's brigade, together with rest of the division, embarked for service overseas on the
Western Front in May 1918, and were among the first American troops to enter
Belgium in July of that year. , commanding
U.S. II Corps, Major General Edward M. Lewis, commanding the 30th Division, and Brigadier General Lawrence Tyson, spectators at II Corps Field Meet boxing matches. Pictured here at
Corbie,
Somme, France, November 4, 1918. In September 1918, the 30th Division, now commanded by Major General
Edward M. Lewis and serving with the
British Expeditionary Force (BEF), was ordered to the
Somme area in northern France, and positioned opposite the heavily fortified Cambrai-Saint Quentin Canal section of the
Hindenburg Line. On the morning of September 29, the 30th attacked German fortifications along this section of the line. Marching in dense fog, the troops pushed across a stretch of "wire entanglements and trench defenses" before crossing the canal and securing the area. According to some reports, the 59th was the first
Allied brigade to break through the Hindenburg Line. In subsequent weeks, the 59th captured the northern French villages of
Prémont,
Brancourt, and
Busigny, and fought its last action on October 20. In the course of the war, 1,879 of the 59th's 8,000 troops were killed or wounded. The brigade received nine
Medals of Honor, the most of any single brigade of the U.S. Army during World War I, while Tyson himself was awarded the
Army Distinguished Service Medal. The citation for the medal reads: In October 1918, Tyson's son, Charles McGhee Tyson (1889–1918), a pilot in the
United States Navy, was lost over the North Sea while scouting for mines. After
Germany's surrender, Tyson left the front to help search for his son off the coast of Scotland. He located his son's body, and shipped it back to Knoxville for burial. Tyson left active duty for the final time in 1919. ==Senate career==