 Costa Gomes argued that African soldiers were cheaper and were better able to create a relationship with the local populace , a tactic similar to the ' hearts and minds ' strategy being used by United States forces in Vietnam at the time . These Flechas units saw action in the territory at the very end stages of the conflict , following the dismissal of Kaúlza de Arriaga on the eve of the Portuguese coup in 1974 – the Carnation Revolution . The units were to continue to cause problems for the FRELIMO even after the Revolution and Portuguese withdrawal , when the country splintered into civil war . 
 Costa Gomes argued that African soldiers <a href='uninflect' title='1'><mark>were</mark></a> cheaper and <a href='uninflect' title='2'><mark>were</mark></a> better able to create a relationship with the local populace , a tactic similar to the ' hearts and minds <a href='null_genetive' title='3'><mark>'</mark></a>strategy being used by United States forces in Vietnam at the time . These Flechas units saw action in the territory at the very end stages of the conflict , following the dismissal of Kaúlza de Arriaga on the eve of the Portuguese coup in 1974 – the Carnation Revolution . The units <a href='uninflect' title='4'><mark>were</mark></a> to continue to cause problems for the FRELIMO even after the Revolution and Portuguese withdrawal , when the country splintered into civil war . 
Costa Gomes argued that African soldiers was cheaper and was betta able to create a relationship w the local populace , a tactic similar to the ' hearts and minds  strategy bein used by United States forces in Vietnam at da time . These Flechas units saw action in tdaterritory at thdaery end stages of the conflict , following the dismissal of Kaúlza de Arriaga on the eve of the Portuguese coup in 1974 – thedarnation Revolution . The dats was to continue to cause problems for the FRELIMO even after the Revolution and Portuguese withdrawal , when the country splintered into civil war .