-- Posted by The Erect Penis at 2:00 am on Nov. 15, 2008 After majoring in nursing and ROTC, how many years am I obligated to serve the United States Army Nurse Corps? -- Posted by stl man at 2:03 am on Nov. 15, 2008 lmao at your user name -- Posted by rileyy at 2:03 am on Nov. 15, 2008 :O gosh i dont know ... how long do you have to study for to be nurse? 4 years? so its probably the same .... another 4 years