At the beginning of June ISWAP conducted multiple attacks on military FOBs. On 1 June, Dalwa, 25km south of Maiduguri, was attacked and overrun, with the subsequent loss of military manpower, supplies, ammunition and equipment. Reportedly, the assault was launched from Alagarno forest in Damboa LGA using four Armoured Personnel Carriers and 12 x gun trucks.
Having overrun the base, the insurgents reportedly destroyed a T55 tank and commandeered 2 x gun trucks, a troop-carrying lorry, one armoured personnel carrier, a mortar and a large quantity of ammunition. The Army reoccupied the base with reinforcements from Maiduguri after ISWAP had left.
In what appeared to be a concurrently timed attack on the evening of Saturday 1 June, ISWAP launched an attack against security forces in Dikwa, 83km East North East of Maiduguri. Although this attack was unsuccessful in dislodging the military, subsequent attacks against Marte and Kirenowa, north of Dikwa, both succeeded in overrunning the FOBs. ISWAP subsequently claimed fourteen Nigerian soldiers killed, six vehicles and four armoured vehicles destroyed and two vehicles captured. Although there is no clarification from military sources, it is reported that escaping troops made their way from Marte to Dikwa, whilst large numbers of displaced civilians also fled to Maiduguri.
On 12 June ISWAP attacked a military FOB in Kareto in the North Western part of Borno. only 16km from the border with Yobe State. In a statement published in Amaq, ISWAP claimed 20 soldiers, including the commanding officer, were killed and a tank and a Shilka ZSU-23-4 were destroyed. ISWAP also stated they captured 7 4x4 vehicles and burned the base, then "withdrew safely".
Despite the presence of an ISWAP force in that area being freely reported by various media sources, it appears that the security forces were unable to mount an effective military response as ISWAP then went on to attack Damasak, 22km North of Kareto, on 15 June.
Although BH remained relatively inactive over the reporting period, on 16 June they demonstrated their continuing capability to mount an attack by sending in three suicide bombers to the village of Mandarari, near Konduga. This attack targeted a sports venue and associated catering stalls, reportedly killing at least 30 and injuring more than 40 civilians.
 The MNJTF comprises troops from Nigeria, Niger, Chad and Cameroon.
 There is evidence that ISIS fighters have joined up with ISWAP having migrated from failed ISIS campaigns in the Middle East.
 Amaq is reportedly the ISIS official new outlet
 The ZSU-23-4 is a Russian made tracked anti-aircraft platform.