Commander of the Army (Sri Lanka)

Columns: No | Commander | Took office | Left office | Time in office | Unit
8 | Perera , Denis Lieutenant General Deshamanya Denis Perera VSV ( 1930-2013 ) | 14 October 1977 | 13 October 1981 | 3 years , 364 days | Sri Lanka Engineers | 9 | Weeratunga , Tissa Lieutenant General Tissa Weeratunga VSV ( 1930-2003 ) | 14 October 1981 | 11 February 1985 | 3 years , 120 days | Gemunu Watch | 10 | Seneviratne , Nalin Lieutenant General Nalin Seneviratne VSV ( 1931-2009 ) | 12 February 1985 | 15 August 1988 | 3 years , 185 days | Sri Lanka Engineers | 11 | Wanasinghe , Hamilton Lieutenant General Hamilton Wanasinghe VSV | 16 August 1988 | 15 November 1991 | 3 years , 91 days | Sri Lanka Artillery | 12 | Waidyaratne , Cecil Lieutenant General Cecil Waidyaratne VSV ( 1938-2001 ) | 16 November 1991 | 31 December 1993 | 2 years , 45 days | Sri Lanka Armoured Corps | 13 | Silva , G. Lieutenant General G. H. De Silva RWP , VSV , USP ( born 1940 ) | 1 January 1994 | 30 April 1996 | 2 years , 120 days | Gemunu Watch | 14 | Daluwatte , Rohan Lieutenant General Rohan Daluwatte RWP , RSP , VSV , USP ( 1941-2018 ) | 1 May 1996 | 15 December 1998 | 2 years , 228 days | Sri Lanka Armoured Corps

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

Answers:
Sri Lanka Engineers