World War I

The regiment was constituted 5 August 1917 in the National Army as the 337th Infantry and assigned to the 169th Infantry Brigade of the 85th Division. It was organized at Camp Custer, Michigan, on 30 August 1917. Its initial commander was Walter Cowen Short.^[3] In August 1917, the regiment was organized with 3,755 officers and enlisted men:

• Headquarters & Headquarters Company- 303
  • Supply Company- 140
  • Machine Gun Company- 178
  • Medical & Chaplain Detachment- 56
• Infantry Battalion (x3)- 1,026
  • Headquarters- 2
  • Rifle Company (x4)- 256^[4]

The regiment deployed to France as part of the American Expeditionary Forces and were billeted in Sancerre from August 14 to September 2, 1918. On September 4, they moved to the cities of Nevers and Cosne where they were trained until the end of the war. The 337th Infantry did not participate in any named campaigns; instead the regiment provided individual replacement soldiers for divisions engaged in combat.^[5][6][7] After completing its war service in France, it arrived at the port of New York aboard S.S. Leviathan on April 2, 1919. The regiment demobilized at Camp Custer on April 23, 1919.^[8]

^[9]

• Camp Custer, Michigan
• SS Leviathan, the former Hamburg-Amerika liner Vaterland, sports wartime camouflage paint to help hide her from German U-boats.
• SS Leviathan leaving for France with 11,000 American troops

Between the Wars

The regiment was reconstituted in the Organized Reserves as the 337th Infantry on 24 June 1921 and reassigned to the 85th Division (later redesignated as the 85th Infantry Division) in the Sixth Corps Area.^[10] It was organized in December 1921 with the Regimental Headquarters and the 1st and 2d Battalions at Grand Rapids and the 3rd Battalion at Sault Ste Marie, Michigan. The 2nd and 3rd Battalions relocated by 1929 to Muskegon and Cadillac respectively. The regiment conducted summer training most years with the 2d Infantry Regiment at Camp Custer. In 1928 the regiment conducted summer training with the 126th Infantry Regiment at Camp Grayling. In 1934 the regiment conducted summer training with the 125th Infantry Regiment at Camp Grayling. They also conducted infantry Citizens Military Training Camp (CMTC) training some years at Camp Custer or Fort Brady, as an alternate form of summer training. The primary ROTC feeder school was Michigan State College of Agriculture and Applied Science.^[11]

• Fort Brady Barracks circa 1908

World War II

The regiment was ordered into active military service 15 May 1942 and reorganized at Camp Shelby, Mississippi, using a cadre provided by the 2nd Infantry Division.^[12] The regiment participated in the #2 Louisiana Maneuvers in April 1943 and the Desert Training Center #3 California Maneuvers in June 1943. In July 1943, the regiment was organized with 3,256 officers and enlisted men:^[13]

• Headquarters & Headquarters Company- 111
  • Service Company- 114
  • Anti-Tank Company- 165
  • Cannon Company- 118
  • Medical Detachment- 135
• Infantry Battalion (x3)- 871
  • Headquarters & Headquarters Company- 126
  • Rifle Company (x3)- 193
  • Weapons Company- 156

It departed Hampton Roads Port of Embarkation aboard HMS Andes on 24 December 1943, landed in Casablanca, French Morocco, on 2 January 1944 and received amphibious warfare training at Port aux Poules.^[14][15][16] It arrived in Naples, Italy on 27 March 1944. The 337th participated in the Rome-Arno, North Apennines, and the Po Valley campaigns in the Mediterranean Theater as part of the Italian Campaign. The regiment usually fought as a Regimental Combat Team with the addition of the 328th Field Artillery Battalion, Company A, 310th Engineer Battalion and Company A, 310th Medical Battalion attached. It saw heavy combat attacking the German's Gustav and Gothic Lines as they moved north up the Italian Peninsula during Operation Diadem. The regiment initially held defensive positions north of the Garigliano River until it attacked and seized Castellonorato until it was stopped by German resistance south of Monte Campese on 16 May 1944. The regiment began a drive on Terracina on 21 May that on the 24th opened the road to the Anzio beach head. Over the next month, the regiment fought through Monte Artemisio and Lariano. In June the 337th captured Monte Ceraso and advanced to the Viterbo River before being relieved on 10 June 1944. The regiment relieved the 2nd New Zealand Division on the Arno River Line on 16 August. On 17 August the 337th seized Mount Pratone. By 18 September, the division had penetrated the Gothic Line. On 1 October, Sergeant Chris Carr of Company L earned the Medal of Honor for actions near Guignola, Italy. The 85th Division went on the defensive near Pizzano from 27 October through 22 November 1944. On 9 January 1945, the 85th relieved the British 1st Infantry Division near Monte Grande and then the 1st Armored Division on 17 April as part of Operation Grapeshot. On 26 April the division crossed the Adige River in the Verona area and by 1 May was clearing the Piave Valley. The German forces in Italy surrendered on 2 May 1945. The regiment departed Fagianeria, Italy for Hampton Roads and was inactivated at Camp Patrick Henry, Virginia, on 25 August 1945.^[17]

• Map of the Desert Training Center
• Hampton Roads Port of Embarkation
• Welcome Home, Camp Patrick Henry
• Spring Offensive, Italy 1945
• IV Corps operations, Italy April 1945

• Operations Report by the 337th Infantry Regiment for January through April 1944
• Operations Report by the 337th Infantry Regiment for May 1944
• 1st Battalion's operations report for May 1944
• Operations Report by the 337th Infantry Regiment for June and July 1944
• Operations Report by the 337th Infantry Regiment for August 1944
• Operations Report by the 337th Infantry Regiment for September 1944
• Operations Report by the 337th Infantry Regiment for October 1944
• Operations Report by the 337th Infantry Regiment for December 1944
• Operations Report by the 337th Infantry Regiment for January 1945
• Operations Report by the 337th Infantry Regiment for February 1945
• Operations Report by the 337th Infantry Regiment for March 1945
• Operations Report by the 337th Infantry Regiment for April 1945

Post War Service

The Regiment was reconstituted on 6 November 1946 in the Organized Reserves with headquarters in the Minneapolis, Minnesota, under TOE 29-7T.^[18] Its recruiting area was Illinois, Minnesota, South Dakota, and North Dakota. On 31 December 1949 the Regimental Headquarters was moved to Chicago, Illinois and then to Waukegan, Illinois, on 1 August 1955. The regiment, and its parent 85th Infantry Division belonged to the Fifth Army, headquartered in Chicago.^[18] The 1948 organization of the regiment called for a strength of 3,774 officers and enlisted men organized as below:

• Headquarters & Headquarters Company- 289
  • Service Company- 186
  • Tank Company- 148
  • Heavy Mortar Company- 190
  • Medical Company- 214
• Infantry Battalion (x3)
  • Headquarters & Headquarters Company- 119
  • Rifle Company (x3)- 211
  • Weapons Company- 165

Under the 85th Training Division

The 337th Infantry was redesignated as the 337th Regiment (Basic Combat Training), and reorganized to consist of the 1st, 2d, and 3d Battalions, elements of the 85th Division (Training Support) on 1 June 1959. On 31 January 1968, the Regimental Headquarters and the 3rd Battalion were inactivated. On 1 May 1971, the 3rd Battalion was reactivated and all three Battalions were redesigned as Advanced Individual Training units. 1st Battalion was inactivated on 13 January 1995 with personnel transferred to the 2nd and 3rd Battalions. The 1st Battalion was reactivated and allotted to the Regular Army on 17 October 1999 and assigned to the 166th Aviation Brigade at Fort Hood, Texas, with a mission to train Aviation units.^[19][20]

Transformation of the Army

All Battalions are currently subordinate to the First Army and wear the First Army Shoulder Sleeve Insignia. The 1st Battalion was assigned to the 166th Aviation Brigade and specialized in training Aviation units at Fort Hood, Texas,^[21] until it was reassigned to Fort McCoy in 2015.^[22] The 1st Battalion was responsible for training an Alaska Army National Guard aviation unit for deployment in 2010,^[23] elements of the 5th Battalion, 159th Aviation Regiment for a deployment to Iraq,^[24] as well as several units for deployment to Kosovo as part of the KFOR in 2014.^[25] The 2nd Battalion was assigned to the 205th Infantry Brigade with a mission to train Combat Support and Combat Service Support units.

Current Assignment

As part of Operation Bold Shift, the battalion changed their missions to better train Army Reserve and National Guard units.^[26][27][28]

The 1st Battalion is a Regular Army unit assigned to the 181st Infantry Brigade at Fort McCoy, Wisconsin, with a mission to train Brigade Support Battalions, Combat Sustainment Support Battalions, and other logistics units. The Battalion frequently sends personnel to NTC and JRTC to train units conducting rotations.

The 2nd Battalion is an Army Reserve unit assigned to the 157th Infantry Brigade with a mission to train Combat Support and Combat Service Support units.^[29][30]

The 3rd Battalion is an Army Reserve unit assigned to the 4th Cavalry Brigade at Fort Knox, Kentucky and provides Observer, Controller/ Trainers (OC/T) and Staff to various Mobilization Training Centers responsible for conducting post mobilization training to Reserve Component units preparing them for deployment to Overseas Contingency Operations.^[31][32]

• 1st Battalion supporting NTC Rotation 10-05
• 1st Battalion supporting JRTC Rotation 16-03 with 3-340th BEB and 1-291st BSB
• 1-337 color guard ready for the battalion reactivation ceremony
• 1-337th BSB at 181st Infantry Brigade change of command ceremony July 28, 2017 ^[33]
• 1-337th BSB preparing to conduct Observer/ Controller duties at Camp Ripley during the Combat Support Training Exercise (CSTX) 17-86-03
• 1-337th BSB Observer/Controller-Trainer conducts an After-action review to assist a Reserve unit capture lessons learned from their exercise
• 1-337th BSB after conducting Observer/Controller duties at Camp Ripley for CSTX 17-86-03
• Fort McCoy, Wisconsin