Brigadier-General Oseni Braimah, commander of the 29 Brigade, was killed in a terrorist attack in Benisheikh, Kaga Local Government Area of Borno State, on Thursday, 9 April 2026. The Defence Headquarters (DHQ) confirmed the incident in a statement issued Friday by Michael Onoja, director of defence media operations. Braimah died alongside another officer and two soldiers during the assault, which targeted troops deployed in the area. According to Onoja, the military personnel were engaged in operations when they came under attack and responded by holding their position. The statement described the incident as a moment of national loss, emphasizing that the personnel made the ultimate sacrifice in defence of Nigeria.

Onoja praised Braimah for his bravery, leadership under fire, and dedication to his troops, calling him a symbol of the Nigerian military's highest values. The Armed Forces of Nigeria (AFN) expressed deep mourning for the fallen, with the Chief of Defence Staff, General Olufemi Olatunbosun Oluyede, extending condolences to the families. The statement highlighted that the deceased were not ordinary citizens but Nigerians who chose to protect the nation from threats. No group has claimed responsibility for the attack, and the military has not disclosed details about the attackers' identity or origin. Security forces remain deployed across the region as part of ongoing efforts to contain insurgency in the northeast.

An investigation into the circumstances surrounding the attack is underway.