Dear, I strongly recommend "The Iron-Blooded God of War" and "The Ace Tanker of War" to you! The former was a military-war fantasy novel, in which the protagonist traveled to a parallel world in the context of World War II and fought fiercely with the Japanese invaders, while the latter was a military-war novel, in which the protagonist was the commander of the national armored regiment, driving a light tank to kill the enemy bravely on the anti-Japanese battlefield. They all fit your needs very well! I hope you like my recommendation, Mwah ~😗