Birger Eriksen

Birger Kristian Eriksen
Born(1875-11-17)17 November 1875
Flakstad, Lofoten, Kingdom of Sweden and Norway
Died16 July 1958(1958-07-16) (aged 82)
Oslo, Norway
Buried
Allegiance Norway
BranchNorwegian Army
Years of service18931940
RankOberst (Colonel)
CommandsCoastal fortresses:
Battles / wars
Awards War Cross with sword
Croix de Guerre
Légion d'honneur
Spouse(s)
Christiane Sæhlie
(m. 1903)
RelationsHans Eriksen (grandfather), Casper Eriksen (father)
Andreas Olsen Sæhlie (father-in-law)

Birger Kristian Eriksen (17 November 1875 16 July 1958) was a Norwegian military officer (with the rank of Oberst) who was instrumental in stopping the first wave of Gruppe 5 of 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 1940. He gained lasting recognition for ordering the fortress under his command to open fire on the vanguard forces of Operation Weserübung, sinking the 16,000-ton heavy cruiser Blücher.