One of the common misconceptions about World War II is that Nazi Germany was the most criminal of that era. In fact, Japan was the biggest criminal, killing around 30 million civilians from the Philippines, Indonesia, Burma and Vietnam, 23 million civilians from China alone, and massacring 300,000 prisoners of war, along with about half a million people who were subjected to deadly medical tests. In the first picture, Shiro ishii, commander of the Japanese Unit 731, known for its crimes and experiments, shows biological weapons on human beings.
The second photo shows a Japanese soldier and Hua killing a Chinese child by the shaft of his gun and planting a spear in it and expose it to the vulnerable Chinese citizens to terrorize them !!
The crimes of the Japanese Empire began two years before the actual start of the Second World War, so figures from Japan were killed in 1939, slightly more than the figures above.