I Reincarnated, but How Did I Turn into a Tank Girl?

[Military] + [Strategy] + [A little encyclopedia]

Bai Mengyu barely survives a battle with the "United Army," only to be killed when an allied fighter mistakenly opens fire on him. At last, he gets the chance to be reincarnated. But through a god's oversight, he is accidentally reborn as a T-90 tank girl instead of the commander he's always dreamed of becoming. In this world, tank technology and combat standards have stagnated. Tank girls aren't weapons of slaughter, but competitors who win resources in tournaments, and each district is eager to train its own champions. Thus begins the protagonist's story in this world.