query: conflict harry richard landis
supports: Harry Richard Landis ( 12 December 1899 -- 4 February 2008 ) was , at age 108 , the older of the last two American First World War veterans . The final one was Frank Buckles , who died in 2011 . John Babcock , a naturalized American , served in the Canadian Army during the war , and also survived Landis . The United States Army (USA) is the largest branch of the United States Armed Forces and performs land-based military operations. It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001. As the largest and senior branch of the U.S. military, the modern U.S. Army has its roots in the Continental Army, which was formed (14 June 1775) to fight the American Revolutionary War (17751783)before the U.S. was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784, to replace the disbanded Continental Army. The United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775. World War I (WWI or WW1), also known as the First World War, or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history. Over nine million combatants and seven million civilians died as a result of the war (including the victims of a number of genocides), a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and the tactical stalemate caused by gruelling trench warfare. It was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved. John Henry Foster "Jack" Babcock (July 23, 1900  February 18, 2010) was, at age 109, the last known surviving veteran of the Canadian military to have served in the First World War and, after the death of Harry Patch, was the conflict's oldest surviving veteran. Babcock first attempted to join the army at the age of fifteen, but was turned down and sent to work in Halifax until he was placed in the Young Soldiers Battalion in August 1917. Babcock was then transferred to the United Kingdom, where he continued his training until the end of the war. Frank Woodruff Buckles (born Wood Buckles, February 1, 1901February 27, 2011) was a United States Army soldier and the last surviving American veteran of World War I. He enlisted in the U.S. Army in 1917 at the age of 16 and served with a detachment from Fort Riley, driving ambulances and motorcycles near the front lines in Europe. Henry John "Harry" Patch (17 June 1898  25 July 2009), dubbed in his later years "the Last Fighting Tommy", was a British supercentenarian, briefly the oldest man in Europe and the last surviving combat soldier of the First World War from any country. He is known to have fought in the trenches of the Western Front. Patch was the longest surviving combat soldier of World War I, but he was the fifth longest surviving veteran of any sort from World War I, behind British veterans Claude Choules and Florence Green, Frank Buckles of the United States and John Babcock of Canada. At the time of his death, aged 111 years, 1 month, 1 week and 1 day, Patch was the third-oldest man in the world and the oldest man in Europe.
candidates: american revolutionary war world war world war i
answer: world war i