Still in North Africa, along with the rest of the 9th Division, the regiment fought in the Battle of El Guettar, which resulted in a significant number of casualties; for actions during the battle, the regiment's commander, received the Distinguished Service Cross (he would later go on to be promoted to be the assistant division commander of the 77th Division). Following El Guettar, the regiment moved north, and fought in the Battle of Sedjenane, and soldiers of the regiment's 2d Battalion, were the first Allied soldiers in Bizerte. After Colonel Patch was promoted and parted ways with the regiment, Colonel George W. Smythe became the regiment's commander. Along with the rest of the 9th Infantry Division, the regiment was sent to Sicily, in 1943; in Sicily the regiment was tangentially involved during the Battle of Troina, which saw the 9th Infantry Division's other infantry regiments seeing significant combat.
Remaining in Sicily after the Axis forces retreated, the regiment received orders to move in November 1943, making its way to England; with the rest of the 9th Infantry Division, the regiment trained until June 1944. The division was garrisoned around Winchester and during this time a number of personnel married local women. While stationed around Alresford, the regiment adopted a dog as a mascot, but it died when struck by vehicle in May 1944.
Soldiers of the 47th Infantry Regiment, march through Remagen, in March 1945
On 14 September, the regiment entered Germany, at or near, Roetgen; it was the first German city to fall to the Allies. The regiment penetrated the Siegfried Line near Schevenhütte on 16 September. This was followed by fighting in the Hürtgen Forest; during the battle the regiment captured Frenzerburg Castle. By 30 September, the regiment had lost 163 officers; one company alone lost 18 officers killed, leading to a loss of experienced leadership over time. During the Battle of the Bulge, the regiment served as a cornerstone of American resistance around Eupen. The regiment had the distinction of another first; on 8 March 1945, soldiers of the regiment became the first infantry troops to cross the Rhine River, doing so at Remagen; for its actions during the crossing of the Rhine, the regiment was awarded a Distinguished Unit Citation. During March the regiment experienced multiple changes in command, at the beginning of the month Colonel Smythe departed the regiment, leaving Lieutenant Colonel Herman A. Schmidt to act as the regiment's commanding officer, only to be succeeded by Colonel Peter O. Ward a week later.
By early April, the 9th Infantry Division was assigned to III Corps, and was part of the effort against the Ruhr Pocket; once again the Panzer Lehr Division attacked the 9th Infantry Division. For its actions in repelling the attack the regiment earned another Distinguished Unit Citation. By mid-April 1945, the 9th Infantry Division was reassigned to VII Corps, and fought against remaining German forces in the Harz Mountains; there they encountered concentration camps near Nordhausen. After the Germans surrendered, the regiment conducted occupation duty in Germany, which lasted until late 1946; part of the duty included a stint at the Dachau Concentration Camp. In December 1946, the regiment was deactivated in Germany.
In 1961, the regiment's 2nd Battle Group (the redesignated 2d Battalion) was deployed to Germany. Stationed in Berlin, the regiment remained there for a year; the following year the regiment's 2d Battalion was inactivated at Fort Lewis, and the 3d Battalion was inactivated at Atlanta. In July 1963, the 1st Battalion was reactivated as a part of the 171st Infantry Brigade. In 1966, at Fort Riley, both the 2d and 3d Battalions were reactivated, with the 3d Battalion being reassigned to 9th Infantry Division.
During the conflict three of the regiment's battalions served; the 2d Battalion was deployed from January 1967 until October 1970, the 3d Battalion was deployed from January 1967 until July 1969, and the 4th Battalion was deployed January 1967 until July 1969. For the most part the regiment's battalions were assigned to the 9th Infantry Division's 2d Brigade, except for the 2d Battalion, which was temporarily assigned at various times in 1968 to the division's other two brigades.[c] During its time in Vietnam, the regiment conducted joint operations with the United States Navy, during which its soldiers deployed from, and billeted aboard, naval vessels.
Soldiers of Company B, 3d Battalion, 47th Infantry, 9th Infantry Division at My Tho in April 1968
In 1966, upon learning of the regiment's upcoming riverine mission, the regiment's leadership worked with the Navy's Amphibious Training School, in Coronado, to gain the skills needed for the expected deployment.:54 In January 1967, the regiment deployed from Fort Riley, by way of San Francisco, disembarking at Vũng Tàu.:59 From mid-February to late-March 1967, the regiment's 3d Battalion conducted combat training, with the USS Whitfield County(LST-1169) and the 9th River Assault Squadron, in the Rung Sat Special Zone.:59–67, 70 In April and May 1967, the regiment's 4th Battalion conducted operations in the Rung Sat Special Zone.:67, 70
Beginning in April 1967, the regiment's 3d Battalion deployed to the Mekong Delta proper.:75 By May of that same year it began to conduct combat operations near Ap Bac;:77 that same month, the regiment's 4th Battalion completed operations in Rung Sat and began operations in the Mekong Delta.:81 On 19 May 1967, the 2d Brigade's headquarters came under attack on the banks of the Mỹ Tho River, and the regiment's 3d Battalion was heavily engaged in thwarting the attack.:83 In June 1967, the regiment took part in Operation Concordia, with the USS Colleton(APB-36) providing medical support.:105–108 In early July 1967, operations were conducted in the Gò Công Province;:110–112 at the end of that month, the regiment moved to Can Guioc.:114–120 In August, and early September, the regiment operated in the Long An Province, supporting units from the Republic of Vietnam Marine Division.:125–127 From October 1967 until January 1968, the regiment was involved in Operations Coronado V & IX, which ended when the regiment embarked on the USS Benewah(APB-35).:128–143
Following the regiment's deployment to Vietnam, its battalions were progressively inactivated. The 3d Battalion was the first to be inactivated, doing so at Fort Riley in August 1969; this was followed by the 2d Battalion, which was inactivated at Fort Lewis in October 1970, and the 1st Battalion in November 1972. This period of inactivation was short lived, as the 2d Battalion was reactivated at Fort Lewis in November 1972, while the 3d Battalion was reactivated at the same base in March 1973. During the remainder of the 1970s and into the late 1980s, the 2d and 3d Battalions remained with the 9th Infantry Division. although, the regiment was withdrawn from the Combat Arms Regimental System and was reorganized into the United States Army Regimental System. This process continued until August 1988 when the 2d Battalion was inactivated again. In 1991, the 9th Infantry Division was inactivated; due to this the 3d Battalion was assigned to the 199th Infantry Brigade, but was later inactivated in January 1994 at Fort Polk.
Soldiers of 3d Battalion at the bayonet assault course at Sand Hill in 2003.
^During the Meuse-Argonne Offensive, a battalion of the regiment was commanded by Major James Stevens. During the battle the regimental surgeon, Major Harrison Webster, was killed.:103
^This occurred around the time of the Pentomic reorganization of the army.
^During 1967 and 1968, Chuck Hagel served in Vietnam as a sergeant within 2d Battalion's Company B. In fiction, Forrest Gump is shown to be a member of the regiment, wearing the regiment's distinctive unit insignia on his Class A Dress Green Uniform. In the film he is cast as a member of the 2d Battalion, 47th Infantry, then a unit of the 9th Infantry Division in the Vietnam War.
^Later-Major General William Matz served in the regiment's 3rd Battalion, being injured during the Tet Offensive.
^Martin, Kali (9 November 2017). "Family Research Guide". The National WWII Museum. Retrieved 11 August 2019. Known as the "Raiders," the 47th Infantry Regiment fought in North Africa and Sicily before coming ashore at Normandy several days after the D-Day invasion. History of the 47th Infantry Regiment (in World War II). 1947. OCLC44453291.
^ ab"William G. Thiele"(PDF). Halfmoon Veterans Memorial Park. Town of Halfmoon, New York. Retrieved 11 August 2019. The 47th Infantry Regiment was activated on June 1st, 1917 at Camp Syracuse in New York. On May 25th, 1918 the 47th Infantry Regiment landed at Brest in France.
^Kaune, Patrick N. (19 May 2011). General Troy H. Middleton: Steadfast in Command(PDF) (Monograph). United States Army Command and General Staff College. Docket School of Advanced Military Studies. Retrieved 11 August 2019 – via Defense Technical Information Center.
^"9th Infantry Division". Order of Battle for U.S. Army Divisions in World War II European Theater of Operations prepared by the ETO Historical Office, December 1945. U.S. Army Center of Military History. Retrieved 11 August 2019.
Roberts, Donald R. (2008). Biola, Heather R. (ed.). The Other War, a World War II Journal. Elkins, W.V.: McClain Printing Co. ISBN978-0-87012-775-5. Biography of a World War II surgeon of the 47th Infantry