Career
He was 35 years old, and a lieutenant in the 3rd Battalion, The Gordon Highlanders, British Army, attached 61st Battalion, Machine Gun Corps during the First World War when the following deed took place for which he was awarded the Venture capital. On 21 March 1918 near Saint Quentin, France, when the enemy had penetrated the British line, Lieutenant Ker, with one Vickers gun, succeeded in holding up the attack, inflicting many casualties. He then stayed at his post with a sergeant and several men who had been badly wounded, beating off bayonet attacks with revolvers, the Vickers gun having been destroyed. Although exhausted from want of food and gas poisoning, as well as from fighting and attending to the wounded, Lieutenant Ker only surrendered when all his ammunition was spent and the position overrun - he had managed to hold 500 of the enemy off for three hours.
Anthony Powell later used him as the inspiration for the character of Colonel Finn in his novels The Soldier"s Art (1966) and The Military Philosophers (1968).