Kohima, June 11 :    Kohima, June 11:  Lt. Gen. D.S. Shergil will take over the charge of GOC 3 Corps while Maj. Gen. R.N. Kapoor will be the new inspector-general of Assam Rifles (North), Army sources said today.In two major changes in the Army top brass here, Lt. Gen. Shergil will take over charge on June 20, while Maj. Gen. Kapoor, who will replace outgoing inspector-general of Assam Rifles (North) Maj. Gen. R.B. Singh, will take charge tomorrow, the sources added. The inspector-general of Assam Rifles (North) is popularly known as the GOC Nagaland. Maj. Gen. Singh has been transferred to the Eastern Command headquarters in Calcutta. Maj. Gen. Singh, who served here for three years, was instrumental in bridging the gap between the civil administration and the Army. During his short stint he tried to foster peace among the underground leaders, the sources said.Maj. Gen. Kapoor, on taking charge tomorrow, will face the unenviable situation of sorting out modalities for the Naga peace process between the underground outfits and the Centre, a source said.His predecessor Maj. Gen. Singh faced the task of putting into order a ceasefire agreement with the National Socialist Council of Nagalim (Isak-Muivah). The relationship between the two sides soured when the Assam Rifles forcibly closed down the NSCN (I-M) ceasefire monitoring cell in Dimapur after an attempt on the life of chief minister S.C. Jamir allegedly by the banned outfit, the source added.The Army accused the NSCN (I-M) of 'gross misuse' of the facility in Dimapur. But, Maj. Gen. Singh persisted with his efforts to bring the banned outfit to the negotiation table, the source said.Maj. Gen. Kapoor has his task cut out to complete the initiatives taken by his predecessor while at the same time he will have to finalise the modalities and groundwork for a possible cease-fire agreement between the NSCN (Khaplang) and the Centre, the source added. The NSCN (K) has already announced a formal ceasefire with the Centre, but not before going through the final ground rules.