[1] His last mission was Aksjon smør, in which Milorg men stole foodstuffs from two warehouses, one in the street Tollbugata belonging to German forces, and one in the street Skippergata belonging to Arbeidstjenesten.
The foodstuffs were distributed to Milorg men who hid in the forests surrounding Oslo.
Storm Weinholdt and Frank Olsen were arrested, and Adolf Bogstad was killed.
[2] Gundersen was sentenced to death on 15 March in an SS court-martial; prosecutor was Siegfried Fehmer.
[3] Together with eight other resistance members—Adolf Bogstad, Erik Bruun, Arvid Hansen, Ingolf Nordstrøm, Kåre Olafsen, Frank Olsen, Kjell Ramberg and Storm Weinholdt—he is commemorated with a memorial stone at Sarabråten in Østmarka.