Two Different Majors Reincarnated as Siblings in Another World

They fought each other for their country. They shed blood everywhere just for peace. They died and disappeared and their bodies were respected by the people of their respective countries for what they had given. A war involving two men who have the rank of Major in the army, who are enemies, from different countries, must end with the harsh reality that the war they are participating in is not for the peace of their country. They were betrayed, betrayed by the superiors of their own country, then died in that rotten war and were reborn in another world at the same time and became twin brothers.