Question: When was the person on the back of the bicentennial quarter appointed general of the army John Thomas served in?

full_context: Document 1: United States Bicentennial coinage: The United States Bicentennial coinage was a set of circulating commemorative coins, consisting of a quarter, half dollar and dollar struck by the United States Mint in 1975 and 1976. Regardless of when struck, each coin bears the double date 1776 -- 1976 on the normal obverses for the Washington quarter, Kennedy half dollar and Eisenhower dollar. No coins dated 1975 of any of the three denominations were minted.
Document 2: Continental Army: The Continental Army was formed by the Second Continental Congress after the outbreak of the American Revolutionary War by the colonies that became the United States of America. Established by a resolution of the Congress on June 14, 1775, it was created to coordinate the military efforts of the Thirteen Colonies in their revolt against the rule of Great Britain. The Continental Army was supplemented by local militias and volunteer troops that remained under control of the individual states or were otherwise independent. General George Washington was the commander - in - chief of the army throughout the war.
Document 3: American Revolutionary War: On April 18, 1775, 700 troops were sent to confiscate militia ordnance stored at Concord. Fighting broke out, forcing the regulars to conduct a fighting withdrawal to Boston. Overnight, the local militia converged on and laid siege to Boston. On March 25, 4,500 British reinforcements arrived with three senior generals; William Howe, John Burgoyne and Henry Clinton. On June 17, the British seized the Charlestown peninsular after a costly frontal assault, leading Howe to replace Gage. Many senior officers were dismayed at the attack which had gained them little, while Gage wrote to London stressing the need for a large army to suppress the revolt. On July 3, George Washington took command of the Continental Army besieging Boston. Howe made no effort to attack, much to Washington's surprise. After a plan to assault the city was rejected, in early March 1776, the Americans fortified Dorchester Heights with heavy artillery captured from a raid on Fort Ticonderoga. On March 17, the British were permitted to withdraw unmolested, sailing to Halifax, Nova Scotia. Washington then moved his army to New York.
Document 4: United States dollar: In February 2007, the U.S. Mint, under the Presidential $1 Coin Act of 2005, introduced a new $1 U.S. Presidential dollar coin. Based on the success of the "50 State Quarters" series, the new coin features a sequence of presidents in order of their inaugurations, starting with George Washington, on the obverse side. The reverse side features the Statue of Liberty. To allow for larger, more detailed portraits, the traditional inscriptions of "E Pluribus Unum", "In God We Trust", the year of minting or issuance, and the mint mark will be inscribed on the edge of the coin instead of the face. This feature, similar to the edge inscriptions seen on the British £1 coin, is not usually associated with U.S. coin designs. The inscription "Liberty" has been eliminated, with the Statue of Liberty serving as a sufficient replacement. In addition, due to the nature of U.S. coins, this will be the first time there will be circulating U.S. coins of different denominations with the same president featured on the obverse (heads) side (Lincoln/penny, Jefferson/nickel, Franklin D. Roosevelt/dime, Washington/quarter, Kennedy/half dollar, and Eisenhower/dollar). Another unusual fact about the new $1 coin is Grover Cleveland will have two coins with his portrait issued due to the fact he was the only U.S. President to be elected to two non-consecutive terms.
Document 5: John Thomas (American general): John Thomas (1724 – 2 June 1776) was an American doctor and soldier from Massachusetts who became a major general in the Continental Army. He was a leader during the siege of Boston. Thomas briefly commanded the withdrawal from Canada after the unsuccessful invasion by the Continental Army. He died from smallpox during the retreat.
Document 6: Kennedy half dollar: In 1971, when silver was eliminated entirely from the coins and production increased, the series began to see improved, but still limited circulation. A special design for the reverse of the half dollar was issued for the United States Bicentennial and was struck in 1975 and 1976. In addition to business strikes, special collector coins were struck for the Bicentennial in silver clad; silver proof sets in which the dime, quarter and half dollar were struck in 90% silver were first minted in 1992. In 2014 a special edition of the Kennedy half dollar was also struck in 99.99% gold.
Document 7: Half dollar (United States coin): On December 1, 1794, the first half dollars, approximately 5,300 pieces, were delivered. Another 18,000 were produced in January 1795 using dies of 1794, to save the expense of making new ones. Another 30,000 pieces were struck by the end of 1801. The coin had the Heraldic Eagle, based on the Great Seal of the United States on the reverse. 150,000 were minted in 1804 but struck with dies from 1803, so no 1804 specimens exist.
Document 8: American Revolution: In sharp contrast, Congress and the American states had no end of difficulty financing the war. In 1775, there was at most 12 million dollars in gold in the colonies, not nearly enough to cover current transactions, let alone finance a major war. The British made the situation much worse by imposing a tight blockade on every American port, which cut off almost all imports and exports. One partial solution was to rely on volunteer support from militiamen and donations from patriotic citizens. Another was to delay actual payments, pay soldiers and suppliers in depreciated currency, and promise that it would be made good after the war. Indeed, the soldiers and officers were given land grants in 1783 to cover the wages that they had earned but had not been paid during the war. Not until 1781 did the national government have a strong leader in financial matters, when Robert Morris was named Superintendent of Finance of the United States.
Document 9: Commander-in-chief: The amount of military detail handled personally by the President in wartime has varied dramatically. George Washington, the first U.S. president, firmly established military subordination under civilian authority. In 1794, Washington used his constitutional powers to assemble 12,000 militia to quell the Whiskey Rebellion -- a conflict in western Pennsylvania involving armed farmers and distillers who refused to pay excise tax on spirits. According to historian Joseph Ellis, this was the ``first and only time a sitting American president led troops in the field '', though James Madison briefly took control of artillery units in defense of Washington D.C. during the War of 1812.
Document 10: United States Mint coin sets: All releases from 1936 to 1972 included the cent, nickel, dime, quarter, and half dollar from that year. The first proof sets through 1964 were minted at the Philadelphia Mint. There were two official releases in 1942: one regular five coin set and a set including a silver wartime nickel. United States currency was debased beginning in 1965, but the sets continued under the name United States Mint Proof Set. Production was moved to the San Francisco branch in 1968, and all subsequent issues bear coins with an ``S ''mint mark. In 1973, the Eisenhower dollar was added to the collection. Sets from 1975 will have a dual - date 1776 - 1976 quarter, half - dollar, and dollar as none of those coins were ever produced with a 1975 date. The Susan B. Anthony dollar replaced the Eisenhower in 1979. The 1981 mint sets were the only method of obtaining a Susan B. from that year, though many have slipped into circulation. With the cease in minting of dollar coins, the regular issue Proof Set for 1982 included a brass token. From 1983 until 1998, the annual United States Proof set resumed to only issuing the penny, nickel, dime, quarter, and half - dollar.
Document 11: French and Indian War: In 1755, six colonial governors in North America met with General Edward Braddock, the newly arrived British Army commander, and planned a four - way attack on the French. None succeeded, and the main effort by Braddock proved a disaster; he lost the Battle of the Monongahela on July 9, 1755 and died a few days later. British operations failed in the frontier areas of Pennsylvania and New York during 1755 - 57 due to a combination of poor management, internal divisions, effective Canadian scouts, French regular forces, and Indian warrior allies. In 1755, the British captured Fort Beauséjour on the border separating Nova Scotia from Acadia, and they ordered the expulsion of the Acadians (1755 -- 64) soon afterwards. Orders for the deportation were given by William Shirley, Commander - in - Chief, North America, without direction from Great Britain. The Acadians were expelled, both those captured in arms and those who had sworn the loyalty oath to His Britannic Majesty. Indians likewise were driven off the land to make way for settlers from New England.
Document 12: Thirteen Colonies: By spring 1775, all royal officials had been expelled, and the Continental Congress hosted a convention of delegates for the 13 colonies. It raised an army to fight the British and named George Washington its commander, made treaties, declared independence, and recommended that the colonies write constitutions and become states. The Second Continental Congress assembled in May 1775 and began to coordinate armed resistance against Britain. It established a government that recruited soldiers and printed its own money. General Washington took command of the Patriot soldiers in New England and forced the British to withdraw from Boston. In 1776, the Thirteen Colonies declared their independence from Britain. With the help of France and Spain, they defeated the British in the American Revolutionary War. In the Treaty of Paris (1783), Britain officially recognized the independence of the United States of America.
Document 13: Continental Army: On June 15, 1775, the Congress elected by unanimous vote George Washington as Commander - in - Chief, who accepted and served throughout the war without any compensation except for reimbursement of expenses.
Document 14: Jethro Sumner: Sumner was named the commanding officer of the 3rd North Carolina Regiment of the North Carolina Line, a formation of the Continental Army, in 1776, and served in both the Southern theater and Philadelphia campaign. He was one of five brigadier generals from North Carolina in the Continental Army, in which capacity he served between 1779 and 1783. He served with distinction in the battles of Stono Ferry and Eutaw Springs, but recurring bouts of poor health often forced him to play an administrative role, or to convalesce in North Carolina. Following a drastic reduction in the number of North Carolinians serving with the Continental Army, Sumner became a general in the state's militia but resigned in protest after the North Carolina Board of War awarded overall command of the militia to William Smallwood, a Continental Army general from Maryland. After the end of the war in 1783, Sumner helped to establish the North Carolina Chapter of the Society of the Cincinnati, and became its first president. He died in 1785 with extensive landholdings and 35 slaves.
Document 15: The Death of General Warren at the Battle of Bunker's Hill, June 17, 1775: The Death of General Warren at the Battle of Bunker's Hill, June 17, 1775 refers to several oil paintings completed in the late 18th and early 19th century by the American artist John Trumbull depicting the death of Joseph Warren at the June 17, 1775, Battle of Bunker Hill, during the American Revolutionary War. Warren, an influential Massachusetts physician and politician, had been commissioned as a general but he served in the battle as a volunteer private. He was killed during or shortly after the storming of the redoubt atop Breed's Hill by British troops.
ground_truth: June 15, 1775
sub_queries: John Thomas >> military branch Answer: Continental Army
who is on the back of the bicentennial quarter Answer: Washington
when was Washington appointed general of #1 Answer: June 15, 1775