Question: Which United States Army corporal serving as a combat medic received the Medal of Honor before Thomas William Bennett? 

Context articles: Anthony J. Carson
Gary B. Beikirch
Thomas M. Doherty
Warren J. Shepherd
Desmond Doss
68W
Thomas W. Bennett (conscientious objector)
Richard G. Wilson
Mitchell Red Cloud Jr.
Norman W. Ressler

Anthony J. Carson April 23, 1869–April 25, 1943 was a United States Army Corporal received the Medal of Honor for actions during the Philippine-American War.
 Corporal Carson was awarded the Medal on January 4, 1906 for actions on April 15–19, 1900.
 His medal was awarded by President Theodore Roosevelt.
 Carson would later admit that the battle was a defeat.
Gary Burnell Beikirch (born August 29, 1947) is a former United States Army soldier who received the United States military's highest decoration, the Medal of Honor, for his actions in the Vietnam War.
 A combat medic, Beikirch was awarded the medal for exposing himself to intense fire in order to rescue and treat the wounded, and for continuing to provide medical care despite his own serious wounds, during a battle at Dak Seang Camp, Vietnam.
Thomas M. Doherty (May 11, 1869 – September 21, 1906) was a corporal serving in the United States Army during the Spanish–American War who received the Medal of Honor for bravery.
Warren Julius Shepherd (September 28, 1871- December 27, 1929) was a corporal serving in the United States Army during the Spanish–American War who received the Medal of Honor for bravery.
Desmond Thomas Doss (February 7, 1919 – March 23, 2006) was a United States Army corporal who served as a combat medic with an infantry company in World War II.
 He distinguished himself in the Battle of Okinawa by saving 75 men, becoming the first conscientious objector to receive the Medal of Honor for actions above and beyond the call of duty.
 He is also the only conscientious objector to receive the medal during World War II and the only conscientious objector to receive the award who was not killed in action.
 For separate earlier acts of valor Doss was twice awarded the Bronze Star.
 Desmond Doss has been the subject of books, a documentary and the 2016 Hollywood blockbuster "Hacksaw Ridge".
68W (often pronounced as sixty-eight whiskey using the NATO phonetic alphabet) is the Military Occupational Specialty (MOS) for the United States Army's Combat Medic Specialist (Combat Medic).
 This specialty is open to males and females as well as allowing color vision deficient personnel.
Thomas William Bennett (April 7, 1947 – February 11, 1969) was a U.S. Army medic and the second conscientious objector to receive the Medal of Honor (Desmond Doss, a medic in World War II, was the first).
 Bennett was killed in action during the Vietnam War and posthumously received the Medal of Honor.
Richard Gene Wilson (August 19, 1931 – October 21, 1950) was a United States Army soldier and a posthumous recipient of the U.S. military's highest decoration, the Medal of Honor, for his actions in the Korean War.
 A combat medic, Wilson was awarded the medal for attempting to rescue a wounded soldier at the Battle of Yongju.
Mitchell Red Cloud Jr. (2 July 1925 – 5 November 1950) was a United States Army corporal who was killed in action while serving in the Korean War.
 Corporal Red Cloud posthumously received the Medal of Honor for heroic actions "above and beyond the call of duty" near Chonghyon, North Korea, on 5 November 1950.
 Before joining the Army, he had been a United States Marine Corps sergeant who had served in World War II.
Norman W. Ressler (May 27, 1873 – September 29, 1914) was a corporal serving in the United States Army during the Spanish–American War who received the Medal of Honor for bravery.