Dennis loved planes as a child, having lived near the American airbase in Northern Ireland. He joined up as an RAF Halton apprentice at aged 16 and describes an extensive and wide-ranging education, working on Spitfires, Hurricanes and even a Mosquito. On completion of his apprenticeship, Dennis was posted to South Wales for 1 year of improver training, during which he worked on Mark 3A and 4 Meteors and then transferred to Pembroke Dock, where he worked on the Sunderland Flying boats. It was from here, that in 1952 he was posted to Korea at short notice. He was based near the Imjin River with the British Army and tasked with working on the Auster aircraft. He describes in detail the work he had to do to keep them flying and the many experiences he had during his time there. The winters were very difficult and he tells of the ingenuity of the British troops in overcoming some of the hardships. He was also posted to the aircraft carrier HMS Glory for one tour, he was clearly fascinated by the operations on board ship. He returned home to his wife and a 23-month-old daughter whom he had never met.