"Jedinstvo 3" plan started in 1990. when for military leadership of YPA was obvious that USSR was moving to defense of its internal borders and only superpower left to contest all world was USA. It was then agreed in YPA that potential for aggression from Warsaw Pact has diminished but potential aggression from NATO has increased. According to new world global order new plan "Jedinstvo 3" included this changes to organize better defenses from new perceived external threats. Plan required building of smaller but more modernized forces with highly mobile units. Corps close to border would have 2 brigades of A. class including artillery regiment of A. class, anti-armor regiment of B. class and engineering battalion of A class, while corps deeper inside country would have 1 brigade of A. or B. class.