By August 1950, the 23rd Infantry Regiment had deployed at the narrow valley called "Bowling Alley", which was near the city of Taegu in defense on the Pusan Perimeter and aid the South Korean troops in the battle.

In the chronology of Korean battles, the fighting for Chipyong-ni followed the withdrawal from northern Korea at the end of 1950, a brief Eighth Army offensive that began on 5 February 1951, and a full-scale Chinese counteroffensive that struck a week later.

Battery B, 82nd Antiaircraft Artillery Automatic Weapons Battalion, joined the regiment, adding six M16 Half-Tracks and four M19 Multiple Gun Motor Carriages to the defense of the town.

The infantry companies dug in their machine guns, registered their mortars, laid antipersonnel mines, and operated daily patrols to the encompassing high ground.

The regimental Heavy-Mortar Company divided the fire of its platoons and sections among the sectors of the perimeter, the artillery registered on all probable avenues of enemy approach and all units established good communication lines.

The positions restricted the fields of fire somewhat but provided good observation, especially for the 3rd Platoon, which could see all areas to the south except for a dead spot in a dry creek bed just in front of its right flank.

When Battery B, 503rd Field Artillery Battalion, arrived, its 155-mm howitzers went into position in the small bowl formed by the U-shaped ridge of which Company G occupied one side.

A liaison officer from the 37th Field Artillery Battalion to Battery B (Captain John A. Elledge), and the commander of Company G (Lieutenant Thomas Heath) worked out a plan for the joint defense of the sector.

While the 23rd RCT built up its defenses, an Eighth Army general offensive got under way on 5 February with X Corps, in the center of the line, attacking to make a double envelopment of the town of Hongch'on, an important enemy build-up area.

The attack moved slowly until the night of 11 February, when the Chinese launched a full-scale counteroffensive with two columns driving south, aimed at the towns of Hoengseong and Wonju in X Corps' sector.

Day 1 of the battle At the 23rd Infantry's perimeter, the usual patrols for the daylight hours of 13 February reported increased enemy activity crowding close to Chipyong-ni on three sides, north, east and west.

[2] After withdrawing from Bloody Ridge, the Korean People's Army (KPA) set up new positions just 1,500 yards (1,400 m) away on a seven-mile (11 km) long hill mass.

They ordered a single infantry regiment—the 23rd—and its attached French battalion to make what would prove to be an ill-conceived assault straight up Heartbreak's heavily fortified slopes.

The Americans employed massive artillery barrages, airstrikes and tanks in an attempt to drive the North Koreans off the ridge, but the KPA proved extremely hard to dislodge.

Finally, on 27 September, the 2nd Division's new commander, Major General Robert N. Young, called a halt to the "fiasco" on Heartbreak Ridge as American planners reconsidered their strategy.

After belatedly recognizing this fact, the 2nd Division crafted a new plan that called for a full divisional assault on the valleys and hills adjacent to Heartbreak Ridge to cut the position off from further reinforcement.

A smaller tank-infantry team scoured the Sat'ae-ri Valley east of the ridge, thereby completing the encirclement and eliminating any hope of reinforcement for the North Koreans on Heartbreak.

The armored thrusts turned the tide of the battle, but hard fighting remained for the infantry before French soldiers captured the last communist bastion on the ridge on 13 October.

[citation needed] Sporadic battles along the line of contact between U.N. and communist forces continued to be fought until the armistice was signed in July 1953, but they were usually initiated by the North Koreans or Chinese.

After completing equipment preparation and troop-leading procedures, the battalion conducted a tactical road march to FOB (Forward Operating Base) Wolverine in Zabul Province on 5–6 August.

On 24 September, members of Company B initiated a pressure plate improvised explosive device (IED) near the town of Omar Zai, killing three US soldiers and wounding three others.

This led to the reestablishment of Operation 'Las Cruces': the tightened control of Shajoy City that occurred between 20–24 November, as well as the arrival of engineers and materials for the improvement of force protection on the COP.

On 6 December, the brigade received a change of mission to stop COIN operations and focus on securing freedom of movement on the highways of southern Afghanistan.

The battalion headquarters and Company C were last to move, occupying FOB Price, a joint Danish, British and American base outside the city of Gereshk, in Helmand Province.

The expansion of FOB Price required a large-scale logistical move of building materials and life support equipment in order to establish the operations center, motor pool, ANA training academy, living areas, and security towers.

Headquarters Company, which had previously owned battle space in Zabul, instead supervised the creation of the Mohawk Academy, which began the training of ANA soldiers in basic skills such as first aid and marksmanship.

During January, the 2nd Marine Expeditionary Brigade and RC South planned Operation Moshtarak, the clearing of the known Taliban stronghold in central Helmand Province known as Marjeh.

Task Force Mohawk, partnered with 1/1/205 ANA, cleared south along the Trekh Zabur Canal, conducting a link up with 3/6 Marines at the "5 points" intersection in southern Nad-e Ali District.

Company A conducted Operation '601 Cougar', clearing north through Gavban in the southern Yakhchal, which yielded a great amount of intelligence about the enemy in the area.

4-23 Infantry was the only Stryker battalion operating in the remote, mountainous terrain of Zabul Province, which required greater logistical coordination, maintenance, and care of equipment than any other unit.