Educated at Royal College, Colombo, Jayawardane joined the army in 1980, undergoing basic training at the Sri Lanka Military Academy he was commissioned in to the Sri Lanka Artillery in 1981 as a Second Lieutenant.
Educated at Royal College, Colombo, Jayawardane joined the army in 1980, undergoing basic training at the Sri Lanka Military Academy. He was commissioned in to the Sri Lanka Artillery in 1981 as a Second Lieutenant.