Question: Only the Brave is a film about an infantry battalion with what motto?
Context: The 7th Arkansas Infantry Battalion (1861–1862) was a Confederate Army infantry battalion during the American Civil War.  The battalion, which was often referred to as Desha's Battalion, was eventually consolidated with the 9th Arkansas Infantry Battalion and the 8th Arkansas Infantry Regiment. The 100th Infantry Battalion is the only infantry unit in the United States Army Reserve.  In World War II, the then-primarily Nisei battalion was composed largely of former members of the Hawaii Army National Guard.  The 100th saw heavy combat during World War II before and after combining with the 442nd Infantry Regiment, another mostly Nisei military unit, into a single fighting combat team.  Based at Fort Shafter, Honolulu, Hawaii, the 100th Battalion has reservists from Hawaii, American Samoa, Guam and Saipan, and has deployed to Iraq and Kuwait.  The unit was unofficially nicknamed the "Purple Heart Battalion", with the motto "Remember Pearl Harbor". The Kalev Infantry Battalion (Estonian: "Kalevi jalaväepataljon" ) is an infantry battalion of the Estonian Land Forces.  It is a part of the 1st Infantry Brigade and its primary task is to train conscription-based mechanized infantry units.  The battalion has been previously known as the Kalevlaste Maleva and as the Kalev Single Infantry Battalion.  The battalion is currently based at Paldiski and is commanded by Lieutenant Colonel Mait Müürisepp. Kohima Camp or Kohima Barracks as it was officially described () in Tai Po Tsai north of Clear Water Bay Peninsula was the site of a proposed new army barracks to house an additional British infantry battalion to be stationed in Hong Kong following a careful review of the needs of Hong Kong which had taken place over 1980/81.  The purpose of the British Hong Kong garrison and of its reinforcement by an additional infantry battalion was intended to demonstrate the British Government's commitment to the integrity and the security of Hong Kong in the run up to 1997.  The land acquisition and construction works for the barracks were to be undertaken by the Hong Kong Government.  Under the Hong Kong Defence Costs Agreement signed in 1981, the Hong Kong Government was required to bear 75% of the costs of maintaining the British garrison.  The plans to introduce an additional infantry battalion and to complete the construction of the barracks were cancelled in 1984 following the Sino-British Joint Declaration on the Future of Hong Kong.  The land became the site of the new Hong Kong University of Science and Technology in 1986. The Viru Infantry Battalion (Estonian: "Viru jalaväepataljon" ) is a battalion of the Estonian Land Forces.  It is a part of the 1st Infantry Brigade and its primary task is to train conscription-based infantry and anti-tank units.  The battalion has been previously known as the 4th Infantry Regiment and as the 4th Single Infantry Battalion.  The battalion is currently based at Jõhvi and is commanded by Lieutenant Colonel Arno Kruusmann. The 2nd Arkansas Infantry Battalion (1861–1862) was a Confederate Army infantry battalion during the American Civil War.  The 2nd Arkansas Infantry Battalion was one of only three Arkansas units which served in Virginia during the Civil War.  The 1st Arkansas Infantry Regiment arrived in Virginia in June 1861, and was present, though not engaged, at the battle of Manassas (Bull Run) in July.  The 3rd Arkansas Infantry Regiment arrived in Virginia in July 1861, and was sent to the mountains of western Virginia. The 12th Battalion, CEF, an infantry battalion of the Canadian Expeditionary Force, was authorized on 10 August 1914 and embarked for Britain on 30 September 1914, where it was redesignated the 12th Reserve Infantry Battalion, CEF on 29 April 1915, to provide reinforcements for the Canadian Corps in the field.  The battalion was reduced during the summer of 1916 and ultimately dissolved.  Its residual strength was absorbed on 4 January 1917 into a new 12th Reserve Battalion, upon re-organization of the reserve units of the Canadian Infantry.  The battalion was officially disbanded on 30 August 1920. Only the Brave is a 2006 independent film about the 100th Infantry Battalion/442nd Regimental Combat Team, a segregated World War II fighting unit primarily made up of "Nisei" Japanese Americans, which for its size and length of service became the most decorated unit in U.S. military history.  The film, produced and directed by Lane Nishikawa is a fictionalized account of the rescue of the Lost Battalion. The Battle of Slater's Knoll (28 March – 6 April 1945) was a battle during the Second World War fought between Australian and Japanese forces on Bougainville Island.  Part of the Bougainville campaign, the battle occurred as a force of about 3,300 Japanese from the Japanese 6th Division supported by a sizeable concentration of artillery launched a counterattack against the main Australian offensive which had been pushing south towards Buin, concentrating their attacks on Slater's Knoll near the Puriata River.  The Australian troops belonged to the 7th Brigade, with the 25th Infantry Battalion being the most heavily engaged, although the 9th Infantry Battalion and the 61st Infantry Battalion also took part in the fighting. The 22nd Battalion was an infantry battalion of the Australian Army.  It was raised in 1915 as part of the Australian Imperial Force for service during World War I and formed part of the 6th Brigade, attached to the 2nd Division.  It fought during the Gallipoli campaign and on the Western Front before being disbanded in 1919.  In 1921, it was re-raised as a part-time unit and was merged with the 29th Battalion in 1930 to form the "29th/22nd Infantry Battalion".  Split in August 1939 and known as the "22nd Battalion (South Gippsland Regiment)", the battalion saw action against the Japanese during World War II in the Huon Peninsula and New Britain campaigns.  The battalion was disbanded in June 1946.  It was re-established as part of the Royal Victoria Regiment in the mid-1960s as a remote area battalion within the Citizens Military Force, and later became a part of the 8th/7th Battalion, Royal Victoria Regiment.
Answer: "Remember Pearl Harbor"