Career
Educated at Ilminster Grammar School, Callander was commissioned into the Royal Munster Fusiliers in 1915 during the First World War. He transferred to Leicestershire Regiment in 1922 and went to the North West Frontier in India in 1938. He served during the Second World War.
During this time, he commanded the 76th Infantry Division, before being assigned General Officer Commanding 4th Division in Greece in December 1944.
In 1945 he took the unconditional surrender at Knossos of German Forces serving in Crete under General Benthag. He became General Officer Commanding 2nd Division in the British Army of the Rhine in 1949 and Director General of Military Training at the War Office in 1948.
He was appointed Military Secretary in 1954 and retired in 1957.
