Career
Chacksfield joined the Royal Air Force in 1927 as an apprentice aircraft engineer at Royal Air Force Halton and later at Royal Air Force Cranwell. He was selected for flying training and gaining a commission as a Pilot Officer in 1933. He served on the North West Frontier in 1933 as a Westland Wapiti pilot.
By 1944 Chacksfield was in command of Number.
910 Wing in Burma operating the Republic Thunderbolt fighter-bomber. By the end of the war he had been mentioned in despatches four times.
From 1945 he became an air officer and served in the Air Ministry and later with North Atlantic Treaty Organization. He served in a number of senior positions until finally becoming Commandant-General of the Royal Air Force Regiment in 1963. Chacksfield retired in 1968 as an air vice marshal.
With a longtime interest in the Scout movement he was appointed in 1970 as chief commissioner for the Scout Association later being awarded the movements highest award, the Silver Wolf in 1975.
In retirement he became chairman on the Burma Star Association until his death from cancer in 1999.