"Ayo Gorkhali " - "The Gurkhas are upon you " - is the battle cry of one of the world's most famous fighting forces. Yet the Gurkha story is not only about bravery in combat. It is also a story of tragedy.In WWI alone, 200,000 Gurkhas out of Nepal's five million people took up arms for the British cause. A further 250,000 Gurkhas fought alongside the British in WWII. In their 200-year history, the Gurkhas have served in places such as Malaya, Singapore,...