[1] Educated at Felsted School,[2] Hardy was commissioned into the Royal Marines in 1924 and qualified as Physical Training Officer.
[3] He served in the Second World War, being appointed as the first Commanding Officer of 46 Commando from 1943 and was awarded the Distinguished Service Order (DSO) for his "gallant and distinguished services while operating with the Army in Normandy"[4] This was followed by the award of a Bar to his DSO for "Courage, example and enthusiasm during commando operations in Northern Europe",[5] before he transferred to the Pacific theatre in 1944 and was appointed to command 3 Commando Brigade in Burma and Hong Kong.
[3] On 29 December 1944, 3 Commando Brigade, under Hardy's command, carried out an unopposed landing on the island of Akyab in Burma.
[6] Between 22 and 23 January 1945 he led a successful defence against Japanese forces at the Battle of Hill 170.
"[7] After the war Hardy became Chief Instructor at the School of Combined Operations at Fremington, was appointed an Officer of the Order of the British Empire in 1948,[8] and then served as commander of 3 Commando Brigade again in Malta, Hong Kong and Malaya.