Roselle Battery was one of the many British fortifications on the island of Alderney. The original battery was completed in 1854 and designed for seven guns. The guns protected the entrance to the harbour in Braye Bay. Around 1900, the guns were removed and replaced by two modern 12-pounder quick-firing guns. Searchlight emplacements and a pillbox bunker were added to the battery.

During the German occupation of Alderney in World War II, Roselle Battery was extended by the German army with new bunkers and the site was renamed to Batterie Marcks.