The Empire is launching a seemingly foolish attack on the Entente Alliance in the middle of winter.  They lack the supplies to successfully invade.  Tanya realizes that this attack is a feint intended to distract from a fjord landing mission.  Sure enough, she is sent to lead the invasion of the fjords, and silence 20 cannon emplacements in time for the fleet to land and the Imperial forces to disembark.
Why are they only attacking 
the cannon emplacements?
لمَ يهاجمون مواضع المدافع فقط؟
Warum nur die Geschützbatterien?
¿Por qué solo atacan los cañones?
¿Por qué solo atacan los cañones?
Pourquoi visent-ils les batteries ?
Perché stanno attaccando
solo le batterie di cannoni?
Por que atacar somente os canhões?
Почему они атакуют только пушки?