The Chindits were a British India 'Special Force' that served in Burma and India in 1943 and 1944 during the Burma Campaign in World War II. They were formed to put into effect Orde Wingate's newly developed guerrilla warfare tactic of long-range penetration. The Chindits were trained to operate deep behind Japanese lines. Their operations were marked by prolonged marches through extremely difficult terrain by underfed troops weakened by diseases such as malaria and dysentery.