In World War II, the Japanese went to great lengths to achieve the final victory, and in addition to the frontal battlefield conflicts, the Japanese came up with many ways to deal with their opponents, including having their spies lurk among the combat forces of other countries.
We all know that Japanese people and Chinese are actually very similar in appearance, and under normal circumstances, as long as Japanese people don't speak, we can't tell their nationality.
The Japanese seized on this feature, so they specially sent people disguised as the Eighth Route Army on the mainland and did all kinds of bad things among the local people, causing the common people to hate the Eighth Route Army to the bone.
Moreover, these Japanese disguised as the Eighth Route Army also brought great distress to the Soviet troops at that time, because they were completely unable to distinguish which were Japanese and which were Chinese.
Moreover, in order to imitate it more similarly, these Japanese people also specially learned Chinese, so that it is easier to confuse the past.
Later, with the help of an old chinese farmer, the Soviet army was finally able to distinguish the Japanese. It turns out that due to the long-term wearing of clogs, the gap between their toes is very large, and if it is serious, it may even deform.
So the Soviet army made these people all take off their shoes, using this method to distinguish between Japanese and Chinese, thus avoiding some unnecessary losses.
So the Japanese were very cunning, and at that time, the Soviet army finally had a way to solve this problem after suffering countless losses. Eventually, after the end of World War II, the Japanese also announced their unconditional surrender, and got their due punishment through trial.