EXCLUSIVE: Seven soldiers killed as Boko Haram sacks military base in Borno The affected soldiers were attached to the 153 Task Force Battalion in Marte Local Government Council of the state. ADVERTISEMENT At least seven Nigerian soldiers have been confirmed killed after a deadly ambush by Boko Haram terrorists in Borno State. The affected soldiers were attached to the 153 Task Force Battalion in Marte Local Government Council of the state, sources familiar with the matter told PREMIUM TIMES. According to the sources, the troops were caught by surprise when the terrorists swooped on them at 10 a.m. on Monday. They, however, put up a strong fight to defend their base and ward off the insurgents.