 Surface @-@ to @-@ surface missile battalions were divided into three or four batteries , each equipped with one missile launcher . They operated thirty FROG @-@ 3 and eighteen <unk> missile launchers . The FROG @-@ 3 , a tactical missile first introduced in 1960 , was being replaced in other non @-@ Soviet Warsaw Pact armies . <unk> to be fairly inaccurate in combat , FROG and <unk> missiles would be ineffective weapons carrying conventional high @-@ explosive warheads . <unk> with nuclear or chemical warheads , however , they could be devastating . According to one former Romanian official writing in 1988 , Romania produced chemical agents that could be delivered by battlefield missiles . 
