In the War of Resistance Against Japan, Travel Back in Time to Fight the Japanese

I accidentally traveled back to the Anti-Japanese War period and became a Ergouzi. I still became an Ergouzi with my father. If the system crashes, you can only rely on yourself first. First he was Ergouzi, then he became a bandit, and finally he joined the regular army. Fight wherever you go, just one sentence: kill the Japanese without mercy, never take prisoners, and leave them alive. After all, we are fighting against the Japanese. Whatever we do, we must not forget that our original intention is to fight against the Japanese!