Erde and Maurier are two countries at war. Adam, a tank crewman in the Maurier army, has survived the fighting by relying on his teamwork with his comrade, Lieutenant Lev. With the battle turning in favor of the great nation of Erde, Adam and his men are ordered to cover the retreat of the main force. Just then, they must extract information about the enemy's tactics from a captured Erde scout…!?
An "enemy" with a different language and culture—seeking the view beyond. In a divided world, what connects them?
(Source: Shufu to Seikatsusha, translated)
— Description from AniList community (anilist.co).