Question: In which battle did the Uncle of Henry Armstrong Reed and youngest brother of a US Army Lt Colonel and a two-time Medal of Honor Recipient get killed along with his brothers and his nephew? 

Context paragraphs:
Peter C. Lemon: Peter Charles Lemon (born June 5, 1950) is a former United States Army soldier and a recipient of the U.S. military's highest award, the Medal of Honor.  He received the award for his actions on April 1, 1970, while serving in Tây Ninh Province during the Vietnam War.  He dedicates the Medal of Honor to the three comrades he lost in the battle which he received the award for: Casey Waller, Nathan Mann and Brent Street.  Lemon is the only Canadian-born U.S. citizen to be presented the medal for fighting in the Vietnam War.  He is the eighth-youngest living Medal of Honor recipient.

Dakota Meyer: Dakota Louis Meyer (born June 26, 1988) is a veteran of the United States Marine Corps and the War in Afghanistan.  He was awarded the Medal of Honor for his actions during the Battle of Ganjgal on September 8, 2009, in Kunar Province, Afghanistan.  Meyer is the second youngest living Medal of Honor recipient, the third living recipient for either Operation Iraqi Freedom or Operation Enduring Freedom – Afghanistan and the first living Marine in 38 years to be so honored.

Boston Custer: Boston Custer (October 31, 1848 – June 25, 1876) was the youngest brother of U.S. Army Lt Colonel George Armstrong Custer and two-time Medal of Honor recipient Captain Thomas Custer.  He was killed at the Battle of the Little Bighorn along with his two brothers.

Wilfred C. Menard, Jr.: Maj. Gen. Wilfred Charles Menard, Jr. (November 10, 1918 – February 20, 2012) (ARNG) was the twenty-sixth Adjutant General of New Jersey.  Commissioned a US Army 2nd lieutenant in 1942, he served actively with the Army during the Second World War rising to the rank of US Army captain.  He continued to serve thereafter as a reserve officer in the New Jersey Army National Guard, which he commanded from 1974-1982.  A graduate of the United States Army Field Artillery School, the United States Army Tank Destroyer School, and the United States Army War College, Menard was an experienced artillery officer.  During his service with the Guard, he was briefly reactivated at the rank of Lieutenant Colonel for the Berlin Crisis of 1961.  Born in Trenton, NJ, Maj. Gen. Menard was a lifelong resident of central New Jersey.  His many military awards and decorations include the Distinguished Service Medal (US Army) and the Legion of Merit.

Kentucky Medal of Honor Memorial: The Kentucky Medal of Honor Memorial is located at the corner of Fifth and Jefferson Streets in downtown Louisville, Kentucky, on the grounds of the old Jefferson County Courthouse.  The Memorial honors all recipients of the Medal of Honor from the Commonwealth of Kentucky.  The Memorial was sculpted by Doyle Glass and dedicated on Veterans Day 2001.  The Memorial features a life-size bronze statue of Medal of Honor recipient John C. Squires as he would appear on the night he earned the Medal of Honor.  Squires, a native of Louisville, was killed in action in Italy during World War II.  The statue of Squires stands on a 4 ft granite base.  A plaque on the base lists the names of each recipient of the Medal of Honor from Kentucky.

Henry Armstrong Reed: Henry Armstrong Reed (April 27, 1858 – June 25, 1876) was the nephew of George Armstrong Custer, Thomas Custer, and Boston Custer.  Although not an official soldier, he was killed along with them at the Battle of the Little Bighorn at the age of 18.

War Is a Racket: War Is a Racket is the title of two works, a speech and a 1935 short book, by Smedley D. Butler, a retired United States Marine Corps Major General and two-time Medal of Honor recipient.  Based on his career military experience, Butler frankly discusses how business interests commercially benefit (including war profiteering) from warfare.  He had been appointed commanding officer of the Gendarmerie during the United States occupation of Haiti, which lasted from 1915 to 1934.

MV Maj. Bernard F. Fisher (T-AK-4396): MV "Maj. Bernard F. Fisher" (T-AK-4396) is a U.S. Military Sealift Command vessel named for US Air Force Medal of Honor recipient Bernard F. Fisher.  The vessel is a civilian-owned and operated container ship under contract to deliver pre-positioned supplies and equipment under the Military Sealift Command's Prepositioning Program.  The "Fisher" is one of eight (as of 2008) container ships that support Navy, Defense Logistics Agency, Air Force, Marine Corps and US Army operations as part of Maritime Prepositioning Ship Squadron Three.

Janak Singh: Major General Janak Singh (surname Katoch) CIE, OBI, ( 7 Aug 1872 – 15 Mar 1972) hailed from Village Khaira, District Kangra in the present day State of Himachal Pradesh in India.  He was Army Minister and later Revenue minister in the government of Maharaja Hari Singh of Jammu and Kashmir State.  On 10 Aug 1947 he was brought out of retirement to be the Prime Minister at a turbulent time on the eve of the independence of India and Pakistan.  He steered the Standstill Agreement that Kashmir State wanted to sign with India and Pakistan.  The agreement was not signed by India, before further deliberations were done Pakistan assisted raiders had marched into Kashmir state.  Maj Gen Janak Singh asked to be relieved and was replaced by Mehr Chand Mahajan on 15 Oct 1947. On 13 September 1947 Maharaja Hari Singh had requested for loan of the services of Lt. Col. Kashmir Singh Katoch (son of Major-General Janak Singh) of the Indian Army to act as the Military Adviser to the Maharaja.  This request was granted by the Indian government.  Lt Col Kashmir Singh Katoch was the eldest of the three sons of Major General Janak Singh.  He had won a Military Cross with a unit of the Frontier Force Rifles during World War II in action in Italy.  He ultimately retired as a Lt General in the Indian Army.  The other two sons also served in the Indian Army, one in the 5 Gorkha Rifles Brigadier Devendra Singh Katoch, AVSM and the youngest Lt Colonel Rajendra Singh Katoch followed his father into the J&K State forces where he was commissioned into the J&K Bodyguard Cavalry.

Museum of World Treasures: The Museum of World Treasures is a world history museum in Wichita, Kansas, United States.  Among the many items on display are "Tyrannosaurus", "Daspletosaurus", and "Tylosaurus" specimens (Including "Ivan the T. rex"), Egyptian mummies, signatures of all the American presidents, a section of the Berlin Wall, the Scarecrow's pitchfork from "The Wizard of Oz" (1939), and the scalp of George A. Custer's nephew, Henry Armstrong Reed, removed by Native Americans at the Custer's Last Stand.  The Museum of World Treasures is not limited to a particular aspect of history, but has opted to display an extremely diverse collection representing many different fields of interest and a wide range of subjects.  This museum is a member of the American Alliance of Museums, but is not accredited by the organization.

Supporting paragraphs: Henry Armstrong Reed Boston Custer
Answer: Battle of the Little Bighorn