Complex sentence: In March 1942 command of the division passed from Major-General Slim to Major-General T.W. "Pete" Rees when Slim was ordered to India to take command of Burma Corps, the kernal that would eventually become the Fourteenth Army.
Split into simpler sentences: In March 1942 command of the division passed from Major-General Slim. He was ordered to India to take command of Burma Corps, the kernal that would eventually become the Fourteenth Army.