Lieutenant-General Sir Colin Bishop Callander, KCB, KBE, MC (13 March 1897 – 31 May 1979) was a senior British Army officer who served as Military Secretary from 1954 to 1957.

[5][6] He served with his regiment on the Western Front, gaining the Military Cross (MC) in September 1916, and being wounded three times during the war.

[3] After attending the Staff College, Camberley from 1933 to 1934,[8] he was promoted to major in 1936[3] and went to the North West Frontier in India in 1938,[6] for which he was mentioned in despatches.

[6] Later that year he took the unconditional surrender at Knossos of German Forces serving in Crete under Generalmajor Hans-Georg Benthack.

[11] Callander became Director General of Military Training at the War Office in London in 1948, and was appointed GOC 2nd Division in the British Army of the Rhine (BAOR) in 1949.