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.
its true benefit would be in 
opening the rear to attack...
فستكون الفائدة الحقيقية هي إتاحة
...الفرصة للخطوط الخلفية لأجل الهجوم
wäre der Vorteil wohl, dass wir
sie von hinten angreifen könnten.
el verdadero beneficio sería abrir 
la retaguardia para atacar…
el verdadero beneficio sería abrir
la retaguardia para atacar…
alors la vraie intention n’est-elle pas
de maîtriser l’arrière-garde ennemie ?
il vero beneficio sarebbe
di poter attaccare il nemico alle spalle.
o verdadeiro benefício seria uma 
abertura para a retaguarda atacar...
значит должна появиться возможность
 ударить сзади...