War of Resistance: I Have a French-Armed Division

Li Mingyuan transmigrates to a parallel world just before the War of Resistance Against Japan. He becomes a major general and division commander in the Yunnan Army, and gains a mechanized division provided by the System.

Then the War of Resistance Against Japan breaks out, and Li Mingyuan immediately leads his troops to take part in the Battle of Shanghai.

The good news: They made it in time.

The bad news: The battle is already in its final stages.

He retreats, unwilling to accept defeat, and later takes part in various famous battles of the war.

(The story does not change history much. The protagonist is not invincible, and this is not an army-building power fantasy.)