|This article may be expanded with text translated from the corresponding article in the German Wikipedia. (December 2011)|
Asmussen was a pastor in Altona, Hamburg. He was removed from office by the Nazis because of his activity in the Reich Fraternal Council of the Confessing Church. He was jailed several times before 1945. He was co-author of the protest "Word and Affirmation of Altona Pastors amid the Misery and Confusion of Public Life" (11 January 1933), which rejected a pact with National Socialism and thus became a preliminary step toward the theological declaration of the Barmen Confessional Synod. From 1945 to 1948, Asmussen presided over the Evangelical Church Chancellery, and from 1949 to 1955, he was dean (German: Propst) in Kiel; he was a promoter of ecumenical dialogue. His writings include Seelsorge (Pastoral Care; 1934) and Der Römerbrief (Letter to the Romans; 1952).