Question: Who founded the military branch that Matej Kocak served in?

full_context: Document 1: 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 2: Samuel Nicholas: Samuel Nicholas (1744 – 27 August 1790) was the first officer commissioned in the United States Continental Marines (predecessor to the United States Marine Corps) and by tradition is considered to be the first Commandant of the Marine Corps.
Document 3: Eugene A. Obregon: Eugene Arnold Obregon (November 12, 1930 – September 26, 1950) was a United States Marine who was posthumously awarded the United States' highest military decoration for valor — the Medal of Honor — for sacrificing his life to save that of a wounded comrade during the Second Battle of Seoul. On September 26, 1950, Private First Class Obregon was fatally wounded by enemy machine gun fire while using his body to shield a wounded fellow Marine.
Document 4: Melvin L. Brown: Melvin Louis Brown (February 2, 1931 – September 5, 1950) was a United States Army soldier during the Korean War. He posthumously received the Medal of Honor for his actions on September 4, 1950 during the Battle of Ka-san. He was 19 years old.
Document 5: James Ernest Karnes: James Ernest "Buck" Karnes was a Sergeant in the United States Army who received the Medal of Honor for his actions near Estrees, France on October 8, 1918 during World War I.
Document 6: Matej Kocak: Matej Kocak (December 3, 1882 – October 4, 1918), a United States Marine Corps sergeant, was posthumously awarded both the Army and Navy Medals of Honor, for "heroism above and beyond the call of duty" in action against the enemy on July 18, 1918. Less than three months after his act of heroism he was killed in action by enemy gunfire in the Battle of Blanc Mont Ridge in France while serving as a member of the 66th Company, 5th Regiment.
Document 7: United States Marine Corps: The history of the Marine Corps began when two battalions of Continental Marines were formed on 10 November 1775 in Philadelphia as a service branch of infantry troops capable of fighting on both at sea and on shore. By the mid-20th century, the U.S. Marine Corps had become a major theorist of amphibious warfare, which were utilized in the Pacific theater of World War II. As of 2016, the USMC has around 182,000 active duty members and some 38,500 reserve Marines. It is the smallest U.S. military service within the DoD.
Document 8: David H. Scofield: "The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to Quartermaster Sergeant David H. Scofield, United States Army, for extraordinary heroism on 19 October 1864, while serving with Company K, 5th New York Cavalry, in action at Cedar Creek, Virginia, for capture of flag of 13th Virginia Infantry (Confederate States of America)."
Document 9: 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 10: Jose F. Valdez: Private First Class Jose F. Valdez (January 3, 1925 - February 17, 1945) was a United States Army soldier who posthumously received the Medal of Honor — the United States' highest military decoration — for his actions near Rosenkranz, France, in the Battle of the Colmar Pocket during World War II.
Document 11: United States Armed Forces: The history of the U.S. Armed Forces dates to 14 June 1775, with the creation of the Continental Army, even before the Declaration of Independence marked the establishment of the United States. Continental Navy, established on 13 October 1775, and Continental Marines, established on 10 November 1775, were created in close succession afterwards by the Second Continental Congress in order to defend the new nation against the British Empire in the American Revolutionary War.
Document 12: Hispanics in the United States Marine Corps: Hispanics in the United States Marine Corps, such as Private France Silva who during the Boxer Rebellion became the first Marine of the thirteen Marines of Hispanic descent to be awarded the Medal of Honor, and Private First Class Guy Gabaldon who is credited with capturing over 1,000 enemy soldiers and civilians during World War II, have distinguished themselves in combat. Hispanics have participated as members of the United States Marine Corps in the Boxer Rebellion, World War I, the American intervention in Latin America also known as the Banana Wars, World War II, the Korean War, the Vietnam War, the Gulf War and most recently in the military campaigns of Afghanistan and Iraq.
Document 13: United States Marine Corps: After the war, the Marine Corps fell into a malaise that ended with the appointment of Archibald Henderson as its fifth Commandant in 1820. Under his tenure, the Corps took on expeditionary duties in the Caribbean, the Gulf of Mexico, Key West, West Africa, the Falkland Islands, and Sumatra. Commandant Henderson is credited with thwarting President Jackson's attempts to combine and integrate the Marine Corps with the Army. Instead, Congress passed the Act for the Better Organization of the Marine Corps in 1834, stipulating that the Corps was part of the Department of the Navy as a sister service to the Navy. This would be the first of many times that the independent existence of the Corps was challenged.
Document 14: Dale M. Hansen: Private Dale Merlin Hansen (December 13, 1922 – May 11, 1945) was a United States Marine who earned his nation's highest military decoration — the Medal of Honor — for his outstanding heroism on 7 May 1945 in the fight for Hill 60 on Okinawa. He was killed by enemy sniper fire three days later.
Document 15: Jacob Zeilin: Jacob Zeilin (July 16, 1806 – November 18, 1880) was the United States Marine Corps' first non-brevet flag officer. He served as the seventh commandant of the United States Marine Corps, from 1864 to 1876.
ground_truth: Samuel Nicholas
sub_queries: Matej Kocak >> military branch Answer: United States Marine Corps
United States Marine Corps >> founded by Answer: Samuel Nicholas