Soldiers from the 2nd Battalion, Royal Australian Regiment repel a number of Chinese assaults against a key position known as The Hook during the Battle of the Samichon River, just hours before the Armistice Agreement is signed, ending the Korean War.

The Battle of the Samichon River (2426 July 1953) was fought during the final days of the Korean War between United Nations (UN) forcesprimarily Australian and Americanand the Chinese People's Volunteer Army (PVA). The fighting took place on a key position on the Jamestown Line known as "the Hook", and resulted in the defending UN troops, including the 2nd Battalion, Royal Australian Regiment (2 RAR) from the 28th British Commonwealth Brigade and the US 7th Marine Regiment, repulsing numerous assaults by the PVA 137th Division during two concerted night attacks, inflicting numerous casualties on the PVA with heavy artillery and small-arms fire. The action was part of a larger, division-sized PVA attack against the US 1st Marine Division, with diversionary assaults mounted against the Australians. With the peace talks in Panmunjom reaching a conclusion, the Chinese had been eager to gain a last-minute victory over the UN forces, and the battle was the last of the war before the official signing of the Korean armistice.

During the action, the PVA had attempted to make a breakthrough to the Imjin River along the divisional boundary between the US 1st Marine Division and the 1st Commonwealth Division to turn the Marine division's flank. Yet with well-coordinated indirect fire from the divisional artillery, including the 16th Field Regiment, Royal New Zealand Artillery, and support from British Centurion tanks of the 1st Royal Tank Regiment, 2 RAR successfully thwarted both assaults, holding the Hook. PVA casualties numbered an estimated 2,000 to 3,000 killed, with the majority of them inflicted by the New Zealand gunners. Meanwhile, on the left flank, US Marines had endured the brunt of the attack, repelling the PVA onslaught with infantry and artillery. Only a few hours later, the armistice agreement was signed, ultimately ending the war. Both sides subsequently withdrew 2 kilometres (1.2 mi) within 72 hours to create the 4-kilometre (2.5 mi) Korean Demilitarised Zone.

The 2nd Battalion, Royal Australian Regiment (2 RAR) is an amphibious light infantry battalion of the Australian Army part of the 1st Division Amphibious Task Group based at Lavarack Barracks in Townsville.

2 RAR was initially formed as the Australian 66th Battalion in 1945 as part of the 34th Brigade (Australia) and since then it has seen active service during the Korean War, Malayan Emergency and Vietnam War. In addition, the battalion has participated in peacekeeping operations in Japan, Rwanda, East Timor and the Solomon Islands and has contributed rifle companies to the security force protecting the Australian embassy in Baghdad following the 2003 invasion of Iraq. In May 2006, 2 RAR's headquarters, support company and a rifle company deployed to Iraq as part of the third rotation of the Al Muthanna Task Group. In June 2011, the battalion deployed to Urozgan Province, Afghanistan as Mentoring Task Force Three (MTF3). In 2011, 2 RAR was selected to be the Army's Amphibious Ready Element Landing Force embarked on the Navy's new Canberra-class amphibious assault ships. The conversion process was completed in October 2017.