The Sword and the Jungle — Alan Savage

Having escaped from Singapore the day before it fell to the Japanese, Captain Harry Brand and his wife, Constance, seek refuge in Burma, their personal lives as chaotic as the disasters with which they are surrounded. When Burma is invaded, Constance is forced to endure the horrors of a Japanese prison camp. And Harry, not knowing her wife's fate, fights his way out with the Burma Corps and then takes part in the epic fight back, first with Orde Wingate's Chindits and then with the 14th Army commanded by William Slim. For Harry, this is a personal crusade to avenge, or regain, the wife he hardly knows.