Senjou no Valkyria: Gallian Chronicles

A group of soldiers from Gallia, a fictional European nation in 1930, fight to defend their homeland after it is invaded by the East European Imperial Alliance. Gallia is targeted due to its rich deposits of ragnite, a valuable fuel source. The military effort is led by Welkin Gunther, the son of the renowned General Belgen Gunther. The campaign aims to expel the invading forces and restore peace to Gallia, which had previously maintained neutrality amid the conflict between the Imperial Alliance and the Atlantic Federation.