This is a 13 part documentary, based on the journals of Churchill's bodyguard, Walter Thompson, who served the Prime Minister during WW2, and in years prior. According to this documentary, the journal ...
"Discipline and Morale of the African, British and Indian Army Units in Burma and India during World War II: July 1943 to August 1945." Modern Asian Studies 44, no. 6 (2010): 1255-282.