Is there a novel about the protagonist of World War II leading a submarine to battle that is worth recommending?

I don't want a proper epic or a movie, just a novel, transmigration, rebirth, or a figment ~

Answer 1

I recommend a novel," Diamond Evolution." After the protagonist accidentally fell onto the deserted island, he absorbed the mysterious stone and became a metallic lifeform. He could absorb the submarine and transform it into a form that was beneficial for combat. The entire novel focuses on evolution and mutation. It involves sci-fi, combat, and other elements. I recommend it to you. I hope you like my recommendation.