 With the initial FRELIMO attacks in Chai Chai , the fighting spread to Niassa and Tete at the centre of Mozambique . During the early stages of the conflict , FRELIMO activity was reduced to small , platoon @-@ sized engagements , <unk> and raids on Portuguese installations . The FRELIMO soldiers often operated in small groups of ten to fifteen soldiers . The scattered nature of FRELIMO 's initial attacks was an attempt to disperse the Portuguese forces . 
