Colin was the youngest son of Lieutenant-Colonel Edwards and his wife, Mrs Hyde Edwards. He joined Ashburnham House in 1909 and spent two years at the school, before going on to Bradfield College. On the outbreak of war, he attended the Royal Military College at Sandhurst, taking a commission as a 2nd Lieutenant in the 1st Battalion of the East Surrey Regiment in May 1915.
He was reported missing on 8th May in the aftermath of the Third Battle of the Scarpe, but it was only established in September, 1917, that he had died of wounds as a prisoner of war on 22nd May that year. He has been wounded in action near Fresnoy and taken by the enemy to a war hospital at Shelotille, Douai. According the press-notice on his death ‘he was only 20 years of age, and had proved himself an enthusiastic young officer of the Regiment which his father was for so long associated’.