WATCH IT: Brutal Military Hazing Caught On Video - Spokane, North Idaho News & Weather KHQ.com

DETROIT -- A soldier from Michigan who was struck with a large, wooden mallet at his Army base in North Carolina was seriously injured, his father said, expressing anger and shock that the incident was allowed to occur.

Ken Roach of Battle Creek said his son, Sgt. Phillip Roach, was hurt at Fort Bragg during what the Army later called an unauthorized "hazing" event to mark his promotion to sergeant. The 22-year-old knocked his head on the cement after getting hit, causing a seizure and head wound that required six staples, his father said.

"I never thought in my wildest dreams I'd be contacted by anybody that my son had a seizure and was hit in the chest during a hazing incident," he told The Associated Press on Friday.

Video of the incident first obtained by WWMT-TV in Kalamazoo shows Roach receiving the blow after another solider takes three measured, practice swings at this chest. Roach stumbles after being struck, then collapses after shaking the hand of the mallet-wielding soldier. click here to read more