The Nagarcoil Forward Defence Line was an Army Defence Line that separated Sri Lankan Army and LTTE militia in Northeastern Kilinochchi - Southeastern Jaffna border.
After extending the northern line to Kilinochchi, M10s were used for passenger services including Yal Devi on the northern line.
Security Forces Headquarters – Kilinochchi (SFHQ-KLN) is a regional command of the Sri Lanka Army, that is responsible for the operational deployment and command all army units stationed in Kilinochchi District, this includes several divisions and the independent brigades.