A huge pillow fight involving cadets at a prestigious US military academy to mark the end of summer training left at least 30 soldiers injured, US media has reported.
At least 24 cadets were reported to have been left unconscious because pillows were stuffed with hard objects.
One cadet suffered a broken leg, while others had dislocated shoulders.
West Point Academy has insisted that none of the injuries is severe and all cadets have returned to duty.
Details of the injuries sustained in August have emerged in The New York Times, which reported that video of the fight posted online shows crowds of yelling cadets, some wearing body armour as well as helmets, surging together in a central quad.
Although pictures of the 20 August brawl have long been circulated on social media, West Point did not confirm it took place until recently, the paper reports.
The annual night-time event has been described as a harmless way of blowing off steam at the end of a gruelling summer of training.
But this year's event seems to have been a little over-exuberant, with pillow cases reported to have been stuffed with hard objects, thought to have been helmets.
"West Point applauds the cadets' desire to build esprit and regrets the injuries to our cadets," the New York Times quoted West Point spokesman Lt Col Christopher Kasker as saying.
"We are conducting appropriate investigations into the causes of the injuries."
No disciplinary action has been taken against the cadets and there are no plans to end the yearly pillow fight which has taken place since at least 1897.