The regular army's 91,500 troops were organized into more than seventy brigades ranging from 750 to 1,200 men each and deployed throughout the ten military regions. Most regions were commanded by lieutenant colonels, with majors as deputy commanders, but some regions were commanded by majors. Each region consisted of one to four provinces, with one or more infantry brigades assigned to it. The brigades were generally dispersed in battalion or smaller unit formations to protect strategic terrain, urban centers, settlements, and critical infrastructure such as bridges and factories. Counterintelligence agents were assigned to all field units to thwart UNITA infiltration. The army's diverse combat capabilities were indicated by its many regular and motorized infantry brigades with organic or attached armor, artillery, and air defense units; two militia infantry brigades; four antiaircraft artillery brigades; ten tank battalions; and six artillery battalions. These forces were concentrated most heavily in places of strategic importance and recurring conflict: the oil-producing Cabinda Province, the area around the capital, and the southern provinces where UNITA and South African forces operated.
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