"When America's men and women commit to becoming Marines, we make a promise to them," he said. "We pledge to train them with firmness, fairness, dignity and compassion."
Some details of the abuse have previously been reported, but the investigative documents describe an environment in which one unit in particular - 3rd Recruit Training Battalion - had drill instructors who not only tested recruits' mettle, as is expected, but abused them physically and emotionally.
Ethnic and homophobic slurs were also used regularly, and drill instructors ordered repeated, unauthorised physical training that sometimes injured recruits. The drill instructors also sometimes were drunk on the job, bringing Fireball whiskey into work on at least one occasion, recruits told investigators.
"The atmosphere of recruit training is much different in San Diego," said one Marine instructor there, who, like others, spoke on the condition of anonymity to discuss an ongoing investigation. "Officers and staff continuously walk around decks to keep eyes on drill instructors and recruits, as well as to ensure our [procedures] are followed as closely as possible. Recruit abuse is absolutely not tolerated here, and I've seen many drill instructors being held accountable and investigated for even minor infractions."
Drill instructors are directed specifically to not discriminate against recruits on the basis of race or religion, and anyone who saw such discrimination should have stood up against it, a retired senior enlisted Marine said.
"Even back in the day when they were really brutal at Parris Island, I can't imagine that happening. That's abuse," the Marine said when informed of the dryer incident. "It's beyond me. We are entrusted to take care of those recruits and train them. There was clearly a breakdown in leadership at Parris Island."
Parris Island's most senior leaders have been aware of hazing problems since at least 2014, the documents show. In fact, one officer who took over 3rd Recruit Training Battalion came in with the perception that it was a major issue and removed so many Marines from their jobs that he created morale problems in his unit, the investigation found.