Sentence:  But they left behind them large numbers of officers , variously called `` volunteers '' or `` mercenaries '' , who now <WSD>staff</WSD> the army of Moise Tshombe in Katanga , the seceded province which , according to Tshombe , holds 65 % of the mineral wealth of the entire country . 
Meaning of the word marked with <WSD> tags:  provide with staff