FORT JACKSON, S.C.  It may come as no surprise that the Army’s new top drill sergeant idolizes Gen. George S. Patton Jr., has jumped out of planes 33 times, aces every physical training test and drives a black Corvette with “noslack” vanity plates.

But consider this: the sergeant is a woman.

On Tuesday, the Army will make Command Sgt. Maj. Teresa L. King, 48, commandant of its drill sergeant school here. It is a first. No woman has run one of the Army’s rigorous schools for drill instructors.

Petite yet imposing, Sergeant Major King seems a drill sergeant at heart, ever vigilant for busted rules: soldiers nodding off in class, soldiers with hair a fraction too long, soldiers who run too slow.

“Are you crazy?” she shouts at one who is walking across a lawn. “Get off my grass!”

The eighth of 12 children, the sergeant major is the daughter of a sharecropper who grew cucumbers and tobacco near Fort Bragg, N.C. Her first job in the Army was as a postal clerk, a traditional position for women in those days.