He decided to switch allegiance when the 1983 riots began, contacting a teacher who was an LTTE recruiter and accepted Balraj despite his PLOTE background.
Balraj's ability was recognized by Mahattaya, although he was suspected by Velupillai Prabhakaran due to his PLOTE background and restricted to the role of a helper rather than a fighter.
When conflict began with the Indian Peace Keeping Force (IPKF), most of the LTTE leadership fled into the jungle; at this point, Balraj's abilities in conventional and psychological warfare became known.
The Sri Lankan Army maintained a strong defence, but Balraj cut off their supplies and attacked from three directions (an action considered impossible by a US Advisor visiting the site several months earlier.
[7] The attack was noted for heavy Sri Lankan Army casualties (without air support) and because Balraj, instead of taking an overland route, moved by sea with the aid of Colonel Soosai.
The operation was facilitated by Brigadier Theepan and Karuna Amman, who attacked the Sri Lankan Army south of Elephant Pass and blocked reinforcements.
Balraj taught military strategy, planning and tactics, providing specialised training for LTTE commandos and special forces.