Description: Academy Manual, Sleeve silk patch insignia, and diploma. The Army of the Republic of Vietnam Dong De Academy was one of the major military academies of the Republic of Vietnam. The academy trained NCOs and officers for all branches of the Republic of Vietnam Armed Forces, as well as offering other specialized training. The above items are representative pieces of what a cadet at the academy would have received. Additional pages from the manual are shown below, though many more pages are of course present.