That was the year of the Ribbon Creek incident.
During the court martial Gen. "Chesty" Puller testified for the defense.
"On April 8, 1956, at 8 p.m., Staff Sergeant Matthew McKeon, a combat veteran of World War II and the Korean War, led Platoon 71, his assigned platoon of 74 recruits, on an extra exercise to Ribbon Creek as a disciplinary measure. McKeon led the platoon toward a swampy tidal creek on Parris Island, near the Marine Corps recruit depot.
Upon arriving 45 minutes later, McKeon jumped into the creek and ordered the platoon to follow. From that point forward, the platoon marched along the creek bed and into deep water. Some of the men could not swim, however, and six drowned during the incident.
Staff Sergeant McKeon was brought to court martial amidst a howl of public condemnation about the "brutality" of Marine Corps training. Many Marines came to McKeon's defense pointing out such training was necessary for survival in combat. McKeon's supervisor, Staff Sergeant E. H. Huff, testified in his defense. He called McKeon an outstanding drill instructor and said that night marches were very common on Parris Island. He said the discipline in the platoon was so poor that he would have taken the recruits on the march himself if he had the time.
McKeon was defended by colorful civilian attorney Emile Zola Berman, who would later go on to defend Sirhan Sirhan. Berman put on a vigorous defense that swayed both the court and public opinion. Marine Corps Commandant General Randolph Pate testified. One reporter pointed out this was like "calling J. Edgar Hoover to testify about a problem within the FBI".
The trial's most dramatic moment, however, was the arrival of General Lewis "Chesty" Puller, the most decorated Marine in the history of the Corps.
Berman called Puller to testify about training methods. Although having some very harsh private words for McKeon, Puller called the incident in Ribbon Creek "a deplorable accident", but one that did not warrant court martial. He said that discipline was the most important factor in military training. He quoted Napoleon in saying that an army becomes a "mob" without it. He mentioned his experiences in the Korean War and one of the reasons troops failed was because of lack of night training.
General Puller felt that the press had blown this incident out of proportion because of prejudice they had against the Marine Corps. He mentioned a similar accident at an Army post where ten soldiers drowned and pointed out that none of their superiors had been charged and that it had never made headlines the way Ribbon Creek did.
In the end, McKeon was acquitted of manslaughter and oppression of troops. He was found guilty of negligent homicide and drinking on duty. The sentence was a $270 fine, nine months of confinement at hard labor, rank reduced to private and a bad conduct discharge.
The Secretary of the Navy later reduced the sentence to three months in the brig, reduction to private with no discharge and no fine. McKeon went back on active duty. He was never able to regain his former rank and was medically retired from the Marine Corps in 1959 by claiming a back injury. He worked as an inspector of standards for his home state of Massachusetts. In a 1970 Newsweek interview, he talked of his lifelong burden of guilt and how he prayed to God every day to keep the boys in his safekeeping and for forgiveness. Matthew McKeon died on November 11, 2003, at the age of 79.
John C. Stevens wrote a book about the Ribbon Creek incident called Court Martial At Parris Island. He tracked down and interviewed many of McKeon's recruits. Stevens pointed out that, with one exception, all of them spoke in favorable terms about their former drill instructor. They claimed he was not the sadist portrayed by the prosecution.
Source: http://en.wikipedia.org/wiki/Ribbon_Creek_incident
What a tragic story
Went in before Ribbon Creek. A few years later, I was asked to be a DI, but told the “talking doctor” I supported Sgt McKeon’s training methods, which did not go over well.