1943: The world seems to face its destruction in all parts; war is raging like never before. You are the commander of a squad, leading the soldiers you've selected into special and top secret operations to change the tide of war in your favor – allies or axis, it's you choice! The new Add-On “Sentinels” starts shortly after the WWII nightmare. Veterans from all countries, even former enemies, stand together and form the secret investigation and intervention group “Sentinels,” for one purpose only: To stop the evil secret society “Thor's Hammer” they have faced in war.