Bro Major Reginald Thornton Dadson OBE was another Old Harrovian like his father before him, two year below Herbert, and a surveyor by trade.
He was a volunteer with the Artists Rifles before the War and was commissioned into the 17th Londons. He served throughout the War, latterly with the Labour Corps rising to the rank of Major, being twice Mentioned and receiving the military OBE.
The Second World War saw him serve in the Home Guard.