Fotokol, Cameroon (CNN)A Cameroonian soldier lies in a trench, the tip of his Kalashnikov rifle pointing toward the Nigerian town of Gambaru, which has been taken over by Boko Haram terrorists. A pickup loaded with Chadian troops crosses the bridge into Gambaru to reinforce their peers locked in an hours-long heavy exchange of gunfire with Boko Haram fighters. A suspected terrorist attempts to cross the El Beid River, which separates Gambaru from Fotokol in Cameroon, but is hit by a bullet from a Cameroonian soldier. That battle took place on February 11, but "fighting here has become a daily occurrence," says Maj. Nlate Ebale of the Rapid Intervention Battalion -- known as BIR -- of the Cameroon military.
@highlight
Cameroon and Chadian forces fight Boko Haram militants across the border area with Nigeria
@highlight
In battles for border towns and a bridge, attacks take place daily, colonel says
"We have to secure this bridge and stop the terrorists from crossing over into @placeholder.