The outgoing GOC, Bengal Area, Lt Gen Giri Raj Singh handed over the command at a solemn function at the HQ Bengal Area.
Lt Gen Sangha, a 1981 commissioned officer, has held key command and staff appointments in the Army and has a lot of operations experience, the sources said.
He has participated in anti-insurgency operations in Punjab as a company commander and later in Jammu and Kashmir as commanding officer as well as brigade commander.
He has also commanded a mountain division in Sikkim, the sources said.