The Saga of Tanya the Evil Vol 29 manga

Description:

After the success of their assault on the Russy Federation’s capital, Moskva, the 203rd Battalion is treated to a brief respite. As her comrades eagerly blow off steam Tanya confronts the mysterious “Being X.” She has vowed to chart the path of the Unified Era with her own hands, but an urgent message from Major Uga leaves her shaken: the city of Tigenhorf, the empire’s most crucial logistics hub, is under siege by Federation troops. The battle that will decide the fate of the entire Eastern Front’s has begun...