The regiment was then broken into various detachments and used to guard the Trans-Siberian railway, as well as 130 km of a branch line leading to the Suchan mines.

For the next 2 years, the 31st and its sister, the 27th Infantry Regiment, fought off bands of Red revolutionaries and White counterrevolutionaries that were plundering the Siberian countryside and trying to gain control of the Trans-Siberian Railroad.

Part of the regiment sailed from Vladivostok on the USAT Crook in February 1920 and arrived at Manila, Philippine Islands, near the end of the month.

The remainder sailed on the USAT South Bend on 30 March 1920 and arrived at Fort William McKinley, Philippines, on 16 April 1920.

Although adjacent parts of Shanghai were demolished by fierce fighting between Japanese and Chinese troops, the International Settlement remained an island of security.

After landing in northern and Southern Luzon, the Japanese pushed rapidly toward Manila, routing hastily formed Philippine Army units that had little training and few heavy weapons.

Unfortunately, the peninsula had not been provisioned with food and medicine and no help could come in from the outside after much of the Pacific fleet was destroyed at Pearl Harbor and mid-ocean bases at Guam and Wake Island were lost.

Despite starvation, disease, no supplies, obsolete weapons, and often inoperative ammunition, the peninsula's defenders fought the Japanese to a standstill for 4 months, upsetting Japan's timetable for Asia's conquest.

When Major General King announced he would surrender the Bataan Defense Force on 9 April 1942, the 31st Infantry buried its colors and the cherished Shanghai Bowl to keep them out of enemy hands.

Some of the 31st's survivors escaped to continue resisting, but most underwent brutal torture and humiliation on the Bataan Death March and nearly three years of captivity.

He returned to Corregidor Island under the orders of Major General Marshall in September 1945 to retrieve the bowl from its hidden location.

[4] In January 1946, General MacArthur restored his former guard of honor to active service at Seoul, Korea, assigning the 31st to the 7th Infantry Division.

In September, the regiment was restored to full strength with replacements from the U.S. and Koreans (KATUSA) hastily drafted by their government and shipped to Japan for a few weeks training before returning to their homeland as members of American units.

When Chinese troops swept down from Manchuria, they surrounded a task force led by the 31st Infantry's commander, COL Allan MacLean.

An example of courage shown by unit members is the DSC awarded to Sergeant George H. Paine: Citation: The Distinguished Service Cross is awarded to Sergeant George H. Paine, United States Army, for extraordinary heroism in action while serving with Company H, 31st Infantry Regiment, Seventh Infantry Division, on 30 November 1950, near Koto-ri, Korea.

He was with the leading element of the Second Battalion moving north to link up with friendly units when the column was attacked by enemy who were entrenched and concentrated on high ground along the route of advance.

Bravely and without regard for his own personal safety, he advanced alone against these positions, exposing himself to draw their fire from other elements of the column who were regrouping to make an attack.

During this action Sergeant Paine was mortally wounded while fiercely resisting enemy forces counterattacking in an attempt to retain the hilltop.

31st Infantry's 1st Battalion has the distinction of being the first Army battalion to be commanded by an ethnic minority on the battlefield, when COL McCaffrey promoted then MAJ Young-Oak Kim upon his return in August 1951 from injuries sustained during a friendly fire incident when his unit became the first American troops to cross beyond the 38th parallel and thought to be too far north to be friendly during Operation Piledriver.

Not all losses were American as UN units such as the Ethiopian Kagnew Battalion who would be attached to the 31st Infantry during the Battle of Pork Chop Hill, and fought with distinction as Army observer, BG S.L.A.

In 1958, the 2d Battle Group 31st Infantry was formed at Fort Rucker, Alabama, planting the proud regiment's flag on the U.S. homeland for the first time in its history.

The 4th Battalion went to South Vietnam in the spring of 1967, operating initially in War Zone D and around Tay Ninh near the Cambodian border as a unit under the 196th Infantry Brigade (Separate).

Operating at Quang Ngai, Chu Lai and the Que Son Valley for most of the rest of the war, the 4th Battalion fought to keep Viet Cong guerillas and the People's Army of Vietnam away from the coastal lowlands.

Remaining in Vietnam, the 6th Battalion conducted an Air Assault as part of the 3rd Brigade into the Parrot's Beak, Cambodia in May 1970, making the famed "Seminole Raid" to seize and destroy a huge enemy base area bordering the Plain of Reeds.

A/4-31 and HHC/4-31 deployed to Camp Phoenix in Kabul, Afghanistan to conduct security operations for CJTF-Phoenix which was training the Afghan National Army (ANA).

The most significant event for the battalion was during the first ever Iraqi national elections, when TF 4–31 provided polling centers in the Kadhamiya area with security and other force protection measures.

Before redeployment the battalion conducted task force level air assaults and raids in enemy strongholds south of Baghdad.

They conducted over 50 air assaults and three amphibious operations, and fired nearly 400 counter-fire artillery missions against enemy forces and in support of troops in contact.

Two additional soldiers at that position, SGT Alex Jimenez and PFC Byron Fouty, were captured during that attack and were missing until July 2008.

To keep these important items from falling into enemy hands, the bowl and cups, along with the colors and unit standard, were buried on Corregidor Island.