Forgotten Ally - China's World War II 1937-1945 (Rana Mitter, 2013)

I overlook just how long China was caught up in what became known as World War II - well into year five before Pearl Harbor was bombed.  Also hadn't appreciated that all this action was draining on Japan as well - some rationing was already underway there prior to Pearl Harbor.  Which helps make the Pearl Harbor gamble, and other adventures, somewhat more understandable from their perspective.

China - what a mess.  Chiang Kai Shek trying to lead a nationalist government starting in late 1920s (following Sun Yat-Sen) after the humiliations over the years (opium wars, Boxer Rebellion, foreign concessions, etc.).  But little national feeling; and insufficient centralized power.  Warlords still control territories.  CKS spends time in Soviet Union and comes away strongly anti-Communist.  But back home in China - Communists are making headway; but Nationalists are somewhat stronger.  Communist remnant forced in 1934 to undertake the now-mythologized "Long March" to isolation in the northwest.  Where Mao gained influence over the years.

Communists and Nationalists worried about Japan, but more worried about each other.

CKS blows up a dam to slow down the Japanese - with breathtaking disregard for the lives of his own people.  Nationalist forces arrogant; civilians starve while they commandeer.  All this ultimately benefits Mao.

Chinese military thoroughly unimpressive despite some modernization efforts.  After Pearl Harbor, US is interested in keeping China in the war as a distraction for Japan.  But no trust develops among the allies.  Gen. Stillwell (US Army) installed as chief of staff but mostly fights with CKS, not effective.  CKS's wife a force for propaganda in U.S. (as discussed, interestingly, in this book).  In the end, some Japanese forces were tied down.

Mao's Cultural Revolution of the 1960s did not come out of nowhere - already in the late '30s and early '40s he was demonizing non-peasants up in his northwest-China power base.  Main butchery to come.  Just one of several absolutely astonishing 20th century killing machines.