With the arrival of the German campaign in U-Boat Missions, players gain control over additional strategic resources other than their own submarines. These resources can be used towards the goal of sinking enemy shipping by either helping the player locate enemies – i.e. the scout planes – or by directly attacking them. These strategic support features are available only for the new German campaign in U-Boat Missions.
The unlocking of these auxiliary units are based on the player’s rank, and the rank is achieved based on the number of successful patrols and renown that has been gained.