Video from West Ifriqiyyah media, possibly from September 2015, show Boko Haram insurgents near Borno moving across a grassy area with small to large tree cover. At first it is not clear what or who they are firing at. A tank appears and is chased by the lightly armed ground force. The video continues showing Government troops driving away, but it is not long until the insurgents catch up with the remaining Nigerian Troops. Bodies are shown in various states of injury as they are looted. One of the Government soldiers is captured alive and is gratuitously despatched in a cruel beheading scene.
The video concludes with the Boko Haram insurgents seemingly delighted with their haul of looted weapons and ammunition, which in reality would possibly only replace what they expended.
Nigerian forces have repelled Boko Haram only to have to take that same region again at a later date. One recent attempt to dissuade attacks is to ban the use of horses by military, (here)