Transmigrated to Jinling: A History Teacher Trains a God-Tier Army

Good news: I transmigrated to 1937 and got a System!

Bad news: I became the commander of a defeated unit, with nothing but old, weak, sick, and disabled soldiers under me. We're heading to the battlefield tomorrow!

Even worse news: The System is an educational System, but I'm just a history teacher. Apart from reciting lessons, I don't know how to do anything!

With no other choice...

When an allied German-equipped division came to seize our supplies, I gritted my teeth and recited the manual for the Type 38 rifle.

Result: My new recruits instantly became elite soldiers. They could disassemble and reassemble a rifle in three seconds, sending the enemy battalion commander fleeing in terror.

Allies: "...This isn't scientific!"

My superior ordered me to use my men as cannon fodder on a deathtrap of a battlefield, so I found a miner and "asked" him to teach me how to dig.

Result: The whole regiment turned into construction fanatics. We built a network of reverse-slope tunnels and caught a reinforced Japanese company in a pincer.

Japanese soldiers: "Baka! Did they grow out of the ground?!"

In Nanjing, Japanese special forces were hunting us down, so I grabbed a collaborator and "learned" a few lines of Japanese.

Result: We infiltrated the Japanese camp at midnight and provoked a fight with our words, making them attack each other.

Japanese commander, shouting: "Report! There's a mole among us! No, there are a whole bunch of moles!"

Me, shrugging: "Don't ask. I'm just setting an example as a teacher. I told you, I'm only a teacher. Why do you keep making me fight wars?"