 It was not until 1965 that recruitment of fighters increased along with popular support , and the strike teams were able to increase in size . The increase in popular support was in part due to FRELIMO agencies ' offer of help to exiled Mozambicans , who had fled the conflict by travelling to nearby Tanzania . Like similar conflicts against the French and United States forces in Vietnam , the insurgents also used landmines to a great extent to injure the Portuguese forces , thus straining the armed forces ' infrastructure and demoralising soldiers . 
 It <a href='negative_concord' title='1'><mark>was</mark></a> <a href='negative_concord' title='2'><mark>not</mark></a>until 1965 that recruitment of fighters increased along with popular support , and the strike teams <a href='uninflect' title='3'><mark>were</mark></a> able to increase in size . The increase in popular support was in part due to FRELIMO agencies <a href='null_genetive' title='4'><mark>'</mark></a>offer of help to exiled Mozambicans , <a href='null_relcl' title='5'><mark>who</mark></a><a href='been_done' title='6'><mark>had</mark></a> fled the conflict by travelling to nearby Tanzania . Like similar conflicts against the French and United States forces in Vietnam , the insurgents also used landmines to a great extent to injure the Portuguese forces , thus straining the armed forces <a href='null_genetive' title='7'><mark>'</mark></a>infrastructure and demoralising soldiers . 
It ain't until 1965 that recruitment of fighters increased along with popular support , and the strike teams was able to increase in size . The increase in popular support was in part due to FRELIMO agencies  offer of help to exiled Mozambicans , done fled the conflict by travelling to nearby Tanzania . Like similar conflicts against the French and United States forces in Vietnam , the insurgents also used landmines to a great extent to injure da Portuguese forces , thus straining the armed forces  infrastructure and demoralising soldiers .