Commander of the Army (Sri Lanka)

Columns: No | Commander | Took office | Left office | Time in office | Unit
15 | Weerasooriya , C. Lieutenant General C. S. Weerasooriya RWP , RSP , VSV , USP | 16 December 1998 | 24 August 2000 | 1 year , 252 days | Sri Lanka Artillery | 16 | Balagalle , Lionel Lieutenant General Lionel Balagalle RWP , RSP , VSV , USP , VSP | 25 August 2000 | 30 June 2004 | 3 years , 310 days | Sri Lanka Artillery | 17 | Kottegoda , Shantha Lieutenant General Shantha Kottegoda WWV , RWP , RSP , VSV , USP , VSP ( born 1949 ) | 1 July 2004 | 5 December 2005 | 1 year , 157 days | Sri Lanka Light Infantry | 18 | Fonseka , Sarath Lieutenant General Sarath Fonseka RWP , RSP , VSV , USP ( born 1950 ) | 6 December 2005 | 15 July 2009 | 3 years , 221 days | Sri Lanka Sinha Regiment | 19 | Jayasuriya , Jagath Lieutenant General Jagath Jayasuriya VSV , USP | 15 July 2009 | 1 August 2013 | 4 years , 17 days | Sri Lanka Armoured Corps | 20 | Ratnayake , Daya Lieutenant General Daya Ratnayake WWV , RWP , RSP , USP | 1 August 2013 | 21 February 2015 | 1 year , 204 days | Sri Lanka Light Infantry

Example questions:
What was the Sri Lanka army unit for the commander who was Chairman of the Ceylon Tobacco Company ?

Answers:
Sri Lanka Engineers