The National Service Regiment was a former general service regiment of the Ceylon Army. The regiment was raised in 1963 following the attempted military coup

Attempted military coup in Ceylon, 1962

The 1962 Ceylonese coup d'état attempt was a failed military coup planned in Sri Lanka . Several Christian senior military and policy officers planned to topple the democratically elected government of Prime Minister Mrs...

 the year before, with officers and men loyal to the government from the 2nd (Volunteers) Regiment of the Ceylon Signals Corps

Sri Lanka Signals Corps

The Sri Lanka Signals Corps a combat support corps of the Sri Lanka Army, responsible for providing military communications, information technology and electronic warfare support. The corps is made up of nine regular regiments and one volunteer regiment...

. The regiment saw action in the 1971 JVP Insurrection before its disbandment in 1977.