William O'Callaghan (Irish Army officer)

William O'Callaghan
Native name
Liam Ó Céallachgáin
Nickname"The Bull"
Born(1921-07-03)3 July 1921
Buttevant, County Cork, Ireland
Died26 December 2015(2015-12-26) (aged 94)
AllegianceIreland
BranchIrish Army
Service years1939–1987
RankLieutenant General
CommandsUnited Nations Truce Supervision Organization (1978–79, 1986–87)
United Nations Interim Force in Lebanon (1981–86)
ConflictsSecond World War
Lebanese Civil War
AwardsDistinguished Service Medal
Legion of Honour (France)
National Order of the Cedar (Lebanon)

Lieutenant General William "Bull" O'Callaghan, BSD (Irish: Liam Ó Céallachgáin; 3 July 1921 – 26 December 2015) was an Irish Army officer.