 From 1947 to 1960 the country seems to have been divided into three major military regions : Cluj , <unk> , and Bucharest in the west , east , and south , respectively . In wartime the land forces in each military region would become an army corps with their headquarters in Cluj @-@ <unk> , <unk> , and Bucharest . Armies seem to have succeeded military regions in 1960 , and three armies seem to have become four in 1980 . What is known is that on 01 @.@ 07 @.@ 1947 Fourth Army became 3rd Military Region , based in Cluj . The 3rd Military Region became the 3rd Army on 30 April 1960 , and the 4th Army on 5 April 1980 . 
