Two Twitter accounts are a constant source of insightful photographs of World War II in Asia.
The account China in WW2  focuses on the war in China that started in September 1931 with Japan's annexation of Manchuria . Another Twitter account, WW2 in Asia , is dedicated to “Livetweeting about history, exactly 80 years after it happened” until 2025 and the eightieth anniversary of the end of the war.
China in WW2
According to its profile, China in WW2  provides “news about the 1931-1945 Sino-Japanese war and the birth of modern Asia.” The account is managed by Peter Harmsen, author of the books ‘Shanghai 1937 ‘ and ‘Nanjing 1937 ‘.
The Twitter account provides images of a long war that has largely been forgotten in both Japan and in the West, despite lasting nearly 15 years until Japan's defeat in 1945.
— China in WW2 (@chinaww2) April 3, 2016 
The images provide a fascinating glimpse into the world of the 1930s, and point out how, for much of the decade, Japan interacted and collaborated with Western powers while at war in China.
— China in WW2 (@chinaww2) April 26, 2016 
— China in WW2 (@chinaww2) January 9, 2016 
While many of the images appear to be posed, there are some stunning documentary finds:
— China in WW2 (@chinaww2) March 25, 2016 
Included are images used for propaganda:
— China in WW2 (@chinaww2) May 6, 2016 
As well as shots that speak to Japan's largely forgotten foray into colonizing northeast China in the 1930s:
— China in WW2 (@chinaww2) April 4, 2016 
The Twitter feed also frequently links to blog articles covering World War 2 in China:
— China in WW2 (@chinaww2) March 2, 2016 
WW2 in Asia
Twitter account WW2 in Asia aims to provide a live-tweet retrospective of the war in Asia. It's also an excellent source of rare and surprising photos.
Much of the appeal of the microblog is that photos are tweeted chronologically in “real-time”; right now the account is tweeting the events of May 1936:
May 11, 1936: New Japanese law to make disclosure of industrial information an act of treason pic.twitter.com/qImZk2dleO 
— WW2 in Asia (@asiainww2) May 11, 2016 
The tweets provide some useful context for what was happening as Asia marched towards war:
May 8, 1936: Speech in Japan's parliament denouncing Army's role in politics is received with thunderous applause pic.twitter.com/nCwiqWXAQ8 
— WW2 in Asia (@asiainww2) May 8, 2016 
April 6, 1936: Japan's war minister orders army to stay out of politics pic.twitter.com/tVCeRv7Ihs 
— WW2 in Asia (@asiainww2) April 6, 2016 
March 10, 1936: New Japanese Minister of War Terauchi Hisaichi says army is not trying to introduce Fascist regime pic.twitter.com/CWT8BJMHgi 
— WW2 in Asia (@asiainww2) March 10, 2016 
There are also some great finds documenting existing Japanese colonialism in Northeast Asia prior to the official start of hostilities in 1941.
April 21, 1936: Japan plans railway from Korean port city of Fusan to Seoul, citing economic and strategic reasons pic.twitter.com/oDHT17sRk0 
— WW2 in Asia (@asiainww2) April 22, 2016 
The Twitter account presents some interesting perspectives on the Japan and Asia of 80 years ago:
April 3, 1936: League of Nations names Japan world's leading exporter of dangerous drugs, followed by Germany pic.twitter.com/kLoYHJ5Htb 
— WW2 in Asia (@asiainww2) April 3, 2016 
May 5, 1936: Japan and territories under its control lead world in per capita drug use, League of Nations data show pic.twitter.com/HVPzCAAodf 
— WW2 in Asia (@asiainww2) May 6, 2016 
Another somewhat depressing but compelling feature of the Twitter account is that it demonstrates that the world was not taken completely by surprise by the eruption of war:
April 18, 1936: ‘Japan Must Fight Britain’ by Lt. Cmdr. Ishimaru Tota is published in English pic.twitter.com/HuxFOa5Qo0 
— WW2 in Asia (@asiainww2) April 18, 2016