Oscarsborg Fortress (Norwegian: Oscarsborg festning) is a coastal fortress in the Oslofjord, close to the town of Drøbak in Akershus County, Norway. The...

the woods intended to protect the entrance of the complex. Oscarsborg Fortress "Austrått Fort". Innovation Norway. 11 August 2011. Archived from the original...

the German invasion force outside Oslo. Eriksen was the commander of Oscarsborg Fortress when Nazi Germany attacked Norway in the early hours of 9 April...

Bolærne Fort Breiviknes Fort Grøtsund Fort Grøtsund Fort (Variant) Herdla Fort Korshamn Fort Kråkvåg Fort Meløyvær Fort Nes Fort Oscarsborg Fortress...

maneuvering into position nearby. The other land-based torpedo battery, at Oscarsborg Fortress, defended Oslo against the simultaneous German invasion there...

Haakon VII and his government. The fleet was engaged in the fjord by Oscarsborg Fortress, an aging coastal installation near Drøbak, that had been relegated...

possible future museum. Odderøya Fort (1667–1999), at Odderøya near Kristiansand. Oscarsborg Fortress (1643–2003) Rauøy Fort Disbanded and partly demolished...

(Alta) Hegra Fortress Helgøya Fortress Kvarven Fort Odderøya Fortress Oscarsborg Fortress Trondenes Fort Meløyvær Fortress Møvik Fortress Nielsen, Jens...

invasion fleet. The first salvo from the Norwegian defenders, fired from Oscarsborg Fortress about 950 meters distance, disabled the center propeller turbine...

German invasion fleet heading for Oslo was significantly delayed when Oscarsborg Fortress opened fire with two of its three old 28 cm guns, followed by...

from their forts over the next few days. Torpedo boat Albatros ran on shore and sank on 10 April west of Fredrikstad. Following Oscarsborg's capitulation...

Retrieved 4 March 2013. "Oscarsborg Fortress". Innovation Norway. 11 August 2011. Retrieved 4 March 2013. "Trondenes Fort". Innovation Norway. 11 August...

outer fjord. It was not until the cruiser was at point-blank range that Oscarsborg Fortress opened fire, hitting with every shell. Within a matter of minutes...

The failures in Poland, and of the Stukas of I./StG 1 to silence the Oscarsborg fort, ensured even more attention was paid to pin-point bombing during the...

Sturzkampfgeschwader I./StG 1, who failed to silence the batteries of the Oscarsborg Fortress thus contributing to the loss of the heavy cruiser Blücher and...

Eidsvold 9 April Battle of Drøbak Sound Norwegian coastal defenses at Oscarsborg Fortress sink the German heavy cruiser Blücher 9 April Action off Lofoten...

the Norwegian coast defenses crippled Blücher as she attempted to pass Oscarsborg Fortress, she was ordered to unload her troops at Son. Around 17:30 Möwe...

the Southwest of Fredrikstad Mørvika Fort near the border with Sweden Oscarsborg Fortress with an underground torpedo battery (in Akershus county) In 1989...

group attacked Akershus Fortress. In the late morning, the group attacked Oscarsborg Fortress after the Norwegian coastal fortress had sunk the heavy cruiser...

Norwegian neutrality protection duties during the First World War, mostly at Oscarsborg Fortress. Remaining in military service after the end of the First World...

Oscar Dickson  Sweden The cargo ship collided with Alpha ( Norway) off Oscarsborg Fortress in the Oslofjord, Norway and sank. Her crew were rescued....