Final answer:
Germany suffered the most significant military losses among the Axis powers during WWII.
Step-by-step explanation:
The Axis power that suffered the most significant military losses during World War II was Germany. Germany sustained heavy casualties and losses on both the Eastern and Western fronts. The country also suffered substantial damage to its infrastructure and cities as a result of Allied bombings.
While Japan also experienced significant military losses, such as the destruction of its naval fleet at the Battle of Midway, Germany's losses were more extensive and had a greater impact on the outcome of the war.
In contrast, China was not an Axis power but a victim of Japanese aggression during the war. China did suffer tremendously during the conflict, with millions of casualties and vast destruction to its cities and infrastructure.
Italy, although an Axis power, did not sustain as significant military losses compared to Germany and Japan. Italy's losses were primarily due to its involvement in military campaigns in North Africa and Europe.
Learn more about Axis powers in WWII