Fifty Harvard Army ROTC students will leave Cambridge at 6:30 a.m. this moring for Ft. Rucker, Ala. The cadets will fly from Massachusetts to Alabama aboard three Army planes from Ft. Rucker aviation center.

The 50 students, who are to return by air Saturday afternoon, will attend a demonstration of vertical envelopment techniques while at Ft. Rucker.

In charge of the detachment making the trip is Lt. Col. George H. Garnhart, professor of Military Science, and other officers from the staff of the Department of Military Science here.