Similar to the original Valkyria Chronicles for PS3, this game takes place in the fictional land of Europa during the war in 1935, but follows the battles of the Nameless Unit rather than the Gallian Army. Members of this special unit leave their names and their pasts behind when joining, to be from then on referred to only by number.
The gameplay is similar to the original, although skewing more closely to the PSP sequel, Valkyria Chronicles 2 in terms of execution. As such, the battlefields are small and divided into distinct zones, and the number of units available to be deployed at once is reduced. Otherwise, the flow of moving units and engaging the enemy are roughly equivalent.