Thirty cadets who just completed their first-year summer training at the prestigious US Military Academy were injured when an annual pillow fight tradition turned bloody, The New York Times reported Friday. The brawl left 24 young cadets with concussions, the West Point military academy told the paper, after reports that some stuffed their pillows with hard objects. A total of 30 cadets were injured, and students reported that the list of wounds included one broken leg as well as dislocated shoulders.