The phrase "to fight the insurgents" means to engage in a conflict or battle against a group of people who are rebelling or fighting against established authority or government. Full definition
He deplored the actions of some security operatives who reportedly went beyond their brief to attack unarmed protesters and admonished that instead of engaging in show of power on the protesters, such security agents should rather demonstrate their bravery by joining others in fighting insurgents in the Sambisa forest. (securitykingng.org)
Russia began intervening in the Syrian civil war on Sept. 30 in support of President Bashar al - Assad, whose forces are fighting insurgents backed by regional powers including Turkey. (businessinsider.com)
Labour fought an insurgent campaign in which Corbyn deftly exploited his status as the underdog; the Labour party appears to have excited young people as well as so - called «left behind» voters in ways not seen for decades. (democraticaudit.com)