James Maurice Gavin (March 22, 1907 – February 23, 1990), sometimes called "Jumpin' Jim" and "the jumping general", was a senior United States Army officer, with the rank of lieutenant general, who was the third Commanding General (CG) of the 82nd Airborne Division during World War II. During the war, he was often referred to as "The Jumping General" because of his practice of taking part in combat jumps with the paratroopers under his command; he was the only American general officer to make four combat jumps in the war.

Gavin was the youngest major general to command an American division in World War II, being only 37Washington Post obituary, "Lt. Gen. James M. Gavin, World War II Hero, Dies at 82" by Richard Pearson, 25 February 1990 upon promotion, and the youngest lieutenant general after the war, in March 1955. He was awarded two Distinguished Service Crosses and several other decorations for his service in the war. During combat, he was known for his habit of carrying an M1 rifle, typically carried by enlisted U.S. infantry soldiers, instead of the M1 carbine, which officers customarily carried.

Gavin also worked against segregation in the U.S. Army. After the war, Gavin served as United States Ambassador to France from 1961 to 1962.

Early life Gavin was born in Brooklyn, New York, on 22 March 1907. His precise ancestry is unclear. His mother may have been an Irish immigrant, Katherine Ryan, and his father James Nally (also of Irish heritage), although official documentation lists Thomas Ryan as his father; possibly in order to make the birth legitimate. The birth certificate lists his name as James Nally Ryan, although Nally was crossed out. When he was about two years old, he was placed in the Convent of Mercy orphanage in Brooklyn, where he remained until he was adopted in 1909 by Martin and Mary Gavin from Mount Carmel, Pennsylvania, and given the name James Maurice Gavin.

Gavin took his first job as a newspaper delivery boy at the age of 10. By the age of 11, he had two routes and was an agent for three out-of-town papers. During this time, he enjoyed following articles about World War I. In the eighth grade, he moved on from the paper job and started working at a barbershop. There he listened to the stories of the old miners. This led him to realize he did not want to be a miner. In school, he learned about the Civil War. From that point on, he decided to study everything he could about the subject. He was amazed at what he discovered and decided if he wanted to learn this "magic" of controlling thousands of troops, from miles away, he would have to continue his education at the United States Military Academy (USMA) at West Point, New York.Gavin, War And Peace In The Space Age, 1958, pp. 22–27.

His adoptive father was a hard-working coal miner, but the family still had trouble making ends meet. Gavin quit school after eighth grade and became a full-time clerk at a shoe store for $12.50 a week. His next stint was as a manager for Jewel Oil Company.Gavin, War And Peace In The Space Age, 1958, pp. 28–29. A combination of restlessness and limited future opportunities in his hometown caused Gavin to run away from home. In March 1924, on his 17th birthday, he took the night train to New York. The first thing he did upon arriving was to send a telegram to his parents saying everything was all right to prevent them from reporting him missing to the police. After that, he started looking for a job.

Military career Enlistment and West Point At the end of March 1924, aged just 17, Gavin spoke to a sergeant in the United States Army. Since he was under 18, he needed parental consent to enlist. Knowing that his adoptive parents would not consent, Gavin told the recruiter he was an orphan. The recruiter took him and a few other underage boys, who were orphans, to a lawyer who declared himself their guardian and signed the parental consent paperwork. On 1 April 1924, Gavin was sworn into the U.S. Army. He later wrote about this period:

He was first stationed in Panama. His basic training was performed on the job in his unit, the U.S. Coast Artillery at Fort Sherman. He served as a crewmember of a 155 mm gun, under the command of Sergeant McCarthy, who described him as "fine". Another person he looked up to was his first sergeant, an American Indian named "Chief" Williams.

Gavin spent his spare time reading books from the library, notably Great Captains and a biography of Hannibal. He had been forced to quit school in seventh grade in order to help support his family, and acutely felt his lack of education. In addition, he made excursions in the region, trying to satisfy his boundless curiosity about everything. First Sergeant Williams recognized Gavin's potential and made him his assistant; Gavin was promoted to corporal six months later.

He wished to advance in the army, and on Williams's advice, applied to a local army school, from which the best graduates got the chance to attend the USMA at West Point. Gavin passed the physical examinations and was assigned with a dozen other men to a school in Corozal, which was a small army depot in the Canal Zone. He started school on 1 September 1924. In order to prepare for the entrance exams into West Point, Gavin was tutored by another mentor, Lieutenant Percy Black, from 8 o'clock in the morning until noon on algebra, geometry, English, and history. He passed the exams and was allowed to apply to West Point. He wrote, "I have always been grateful to Lieutenant Black for his insistence and have felt that this was what enabled me to pass."

Gavin arrived at West Point in the summer of 1925, three months after his 18th birthday and 14 months after enlistment. On the application forms, he indicated his age as 21 (instead of 18) to hide the fact that he had not been old enough to join the army when he did. Since Gavin missed the basic education that was needed to understand the lessons, he rose at 4:30 every morning and read his books in the bathroom, the only place with enough light to read. After four years of hard work, he graduated in June 1929, 185th out of a class of 299. In the 1929 edition of the West Point yearbook, Howitzer, he was mentioned as a boxer and as the cadet who already had been a soldier. After his graduation and his commissioning as a second lieutenant, he married Irma Baulsir on 5 September 1929.

Pre-war career Gavin was posted to Camp Harry J. Jones near Douglas, Arizona, on the U.S.–Mexican border. This camp housed the 25th Infantry Regiment (one of the entirely African-American Buffalo Soldier regiments). He stayed in this posting for three years.

Afterward, Gavin attended the United States Army Infantry School at Fort Benning, Georgia. This school was managed by Colonel George C. Marshall, who had brought Joseph Stilwell with him to lead the Tactics department. Marshall and Stillwell, both of whom were distinguished veterans of World War I, taught their students not to rely on lengthy written orders, but rather to give rough guidelines for the commanders in the field to execute as they saw fit, and to let the field commanders do the actual tactical thinking; this was contrary to all other education in the U.S. Army thus far. Of Stilwell and his methods, Gavin wrote, "He was a superb officer in that position [head of tactics], hard and tough worker, and he demanded much, always insisting that anything you ask the troops to do, you must be able to do yourself."

The time spent at Fort Benning was a happy time for Gavin, but his marriage with Irma Baulsir was not going well. She had moved with him to Fort Benning, and lived in a town nearby. On 23 December 1932, they drove to Baulsir's parents in Washington, D.C., to celebrate Christmas together. Irma decided she was happier there and remained with her parents. In February 1933, Irma became pregnant. Their daughter, Gavin's first child, Barbara, was born while Gavin was away from Fort Sill on a hunting trip. "She was very unhappy with me, as was her mother", Gavin later wrote. Irma remained in Washington during most of their marriage, which ended in divorce upon his return from the war.

In 1933, Gavin, who had no desire to become an instructor for new recruits, was posted to the 28th and 29th Infantry Regiment at Fort Sill, Oklahoma, under the command of then-Lieutenant Colonel (later Lieutenant General) Lesley J. McNair. He spent most of his free time in, as he called it, the "excellent library" of this fort, while the other soldiers spent most of their time partying, shooting, and playing polo. One author in particular impressed Gavin: J. F. C. Fuller. Gavin said about him: "[He] saw clearly the implications of machines, weapons, gasoline, oil, tanks, and airplanes. I read with avidity all of his writings."

In 1936, Gavin was posted to the Philippines. While there, he became very concerned about the US's ability to counter possible Japanese plans for expansion. The 20,000 soldiers stationed there were badly equipped. In the book Paratrooper: The Life of Gen. James M. Gavin, he is quoted as saying, "Our weapons and equipment were no better than those used in World War I". After a year and a half in the Philippines, he returned to Washington with his family and served with the 3rd Infantry Division in the Vancouver Barracks. Gavin was promoted to captain and held his first command position as commanding officer of K Company of the 7th Infantry Regiment.

While stationed at Fort Ord, California, he received an injury to his right eye during a sports match. Gavin feared that this would end his military career, and he visited a physician in Monterey, California. The physician diagnosed a retinal detachment and recommended an eye patch for 90 days. Gavin decided to rely on his eye healing by itself to hide the injury. Gavin returned to West Point as an instructor of tactics during the 1940—1941 school year.

World War II Constructing an airborne army

Gavin began training at the new Parachute School at Fort Benning in August 1941. After graduating in August, he served in an experimental unit. His first command was as a captain and the commanding officer of C Company of the newly established 503rd Parachute Infantry Battalion.

Gavin's friends William T. Ryder, commander of airborne training, and William P. Yarborough, communications officer of the Provisional Airborne Group, convinced Colonel William C. Lee to let Gavin develop the tactics and basic rules of airborne combat. Lee followed up on this recommendation and made Gavin his operations and training officer (S-3). On 16 October 1941, Gavin was promoted to major.

One of Gavin's first priorities was determining how airborne troops could be used most effectively. His first action was writing FM 31-30: Tactics and Technique of Air-Borne Troops. He used information about Soviet and German experiences with paratroopers and glider troops and also used his own experience in tactics and warfare. The manual contained information about tactics, but also about the organization of the paratroopers, what kind of operations they could execute, and what they would need to execute their task effectively. Later, when Gavin was asked what made his career take off so fast, he would answer, "I wrote the book".