Lars Borgersrud (born 11 March 1949) is a Norwegian military historian and government scholar.
Borgersrud formed close relations with leading figures of the Norwegian Maoist movement beginning in the late 1960s.
[2] Nevertheless, Borgersrud eventually published three books with material from his work under the pseudonym "Ottar Strømme": Stille mobilisering, Unngå å irritere fienden and Den hemmelige hæren.
In 1978, he also published the first volume of the secret report from Den militære undersøkelseskommisjonen av 1946, under the same pseudonym.
[5][6] While preparing the book Konspirasjon og kapitulasjon (2000), Borgersrud tried to survey Norwegian military officers with Nazi sympathies but met resistance and was denied access to historical documents from the National Archival Services of Norway.