Here are some of the atrocities committed by Japan during WW2

 Japan in WW2 was brutal (barbarian imo), it actually surprises me a bit how the public perception only focused on Germany's crimes since then

atrocities committed by Japan during WW2; mass murders and rapes, impaled babies, family members forced to have sex with each other, contests of who could kill 100 people using only a sword...

The japanese also had comfort women from korea and other territories, women forced into sexual acts with the soldiers.

Japan also engaged neutral powers, chemical weapons, torture and execution of enemy soldiers and also cannibalism.

"Beginning in the mid-1930s, Japan conducted numerous attempts to acquire and develop weapons of mass destruction. The 1943 Battle of Changde saw Japanese use of both bioweapons and chemical weapons"

The Japanese Army was uniquely brutal (and uniquely capable of fighting to the last man and last bullet) as a result of its culture and training. The Japanese military controlled the school system, and children were inculcated from an early age with ideas or racial superiority. By the time they joined the military, hazing and brutal beatings were very normal and encouraged. Soldiers understood they were worthless as individuals, completely disposable. Brutal treatment of the Chinese was an initiation for many Japanese. Young officers were keen to show their manhood by beheading prisoners, privates were expected to show their soldierly inhumanity by bayoneting women and children. This behaviour said little about the Japanese, and a lot about their military itself.

This was the culture the Japanese Army then brought with it to the battlefield. They looked down on the Chinese as the European did their 'natives', a sort of subhuman species. They took great joy in humiliating Westerners, who the Japanese military constantly accused of 'dishonouring' their race (often with good reason) before the war. European women were raped and some in Indonesia taken to a brothel for officers to become sex slaves. Korean women were formally incorporated into the Japanese Army for this purpose. There were massacres of European soldiers in all Japan's campaigns, and Indian and Gurkha soldiers, as well as Filipinos.

At the end of the war, Japanese were told to take Western prisoners, scattered in the Pacific, on death marches intended to kill not just the prisoners (to remove witnesses), but even the garrison soldiers themselves. Such marches were ordered on Wewak and Salawan, just one or two escaped prisoners surviving to tell their stories.

One of the greatest war crimes was that against the people of Japan itself. Most of the Japanese Army and much of the Navy was willing to see everyone in Japan killed so they didn't have to suffer the humiliation and 'loss of face' involved in surrendering. They decided the loss of the war meant the end of Japan as a nation, and therefore any level of death was okay to bring upon the civilian population. Japan's war aims were in tatters by June 1942, completely impossible from 1944. Every action that continued the war from this point was a war crime of Japan's leadership, too egotistical to admit their utter failure.