Senjou no Valkyria

Synopsis

Under threat of an approaching Imperial invasion, the inhabitants of Bruhl are forced to evacuate under the protection and assistance of the Bruhl Townwatch. Alicia, a member of the Townwatch, arrests Welkin Gunther at gunpoint on suspicion of espionage, despite his protestations of innocence. Welkin manages to escape and Alicia, still convinced that he is an Imperial spy, gives chase. During the chase, both of them are spotted by Imperial scouts and fired upon. The two retreat to the safety of the Gunther estate in the Bruhl countryside, where they meet up with Welkin's Darcsen foster-sister Isara. Imperial troops and tanks arrive and surround the estate.

(Source: Wikipedia)