Upon seizing Nanjing, Japanese soldiers conducted mass killings and other atrocities as they ravaged the Chinese citizens during the Second Sino-Japanese War. (Image: Public Domain via Wikimedia)

John Rabe, a German businessman, is known to the world for setting up a safe zone during the Second Sino-Japanese War in China (1937-1945) and saving 250,000 Chinese people. (Image: DrSivle via Wikimedia)