The battery structures include bunkers, gun emplacements and the Marine Peilstand 3 tower, which are on Les Landes, a coastal patch of heathland at the north end of St Ouen's Bay.

When completed there would have been an M132 Command Bunker as at Battery Lothringen and the main armament would have consisted of four 15 cm SK C/28 naval guns.

The primary purpose of this battery would have been the defence of St Ouen's Bay in the event of an amphibious assault by the Allies, although Jersey's entire coastline would have been within range of the guns, as would the stretch of water between Jersey and Sark.

Four captured French Canon de 155mm GPF, known as the 15.5 cm K 418(f) by the Germans, were installed at Moltke.

These are a type of defensive fighting position known as Tobruk by the Allies, and are small bunkers constructed from concrete with an aperture on the top which was used to mount a turret from an otherwise obsolete tank.