He was featured in the 2003 Danish documentary film, With a Right to Kill (Med ret til at dræbe), based on the 2001 history by Peter Øvig Knudsen.

The book and film were part of some of the first efforts by Danes to seriously study issues raised by the liquidation of 400 persons by the Danish resistance during the war.

The film featured news footage, interviews with surviving agents and leaders of the Resistance movement, and reconstruction of known events.

Dyrberg's Holger Danske group was also the subject of Flame and Citron (Flammen og Citronen, 2008), a Danish fictionalized dramatic film based on actions of its two most noted members, who were both killed by the Germans before the end of the war.

[2] After Nazi Germany invaded Denmark (beginning 9 April 1940), Dyrberg was among the many young men who joined the Danish Resistance.

[1] Dyrberg had a very close working relationship with Bent Faurschou-Hviid ("Flame") and Jørgen Haagen Schmith ("Citron"), two of the most noted members of the group.

For decades after the war, issues related to the choices of Danish targets to be liquidated were not much discussed; politicians wanted to support the resistance in the postwar effort to rebuild their society.

[2] He worked for the government on programs to implement the Marshall Plan, serving in the Directorate for Commodity Supply, a trade policy department (1948–52), and in the productivity committee of the Ministry of Commerce, the predecessor of Denmark's Enterprise Fund (1952-1953).

[3][4] Dyrberg was featured in the 2003 documentary film, With a Right to Kill (Med ret til at dræbe), about the Holger Danske group.

The 2008 Danish dramatic film, Flame and Citron (Flammen og Citronen), featured two of his most prominent agents as the central characters, and portrayed the complex, morally ambiguous relations within the Resistance.