In 1923 Brauer was mayor of the independent city of Altona. Brauer fled the Nazi regime to the United States in 1933, with a passpord of a friend. In 1934 Brauer's German citizenship was revoked and he mantained the U.S. citizenship. In July 1946 he came back to Hamburg working for the American Federation of Labor. In Oktober 1946 after the election of the Hamburg Parliament, Brauer was elected as the First Mayor of Hamburg. After Brauer complained in a letter to the British forces about the supply shortfall in Hamburg, the British Governor Vaugham H. Berry ordered not to heat the officers' mess until there were a solution.
From 1961 until 1965 Brauer was member of the German Bundestag.
Germany-AQUAFIMA Integrating Aquaculture and Fisheries Management towards a Sustainable Regional Development in the Baltic Sea Region Project
Aug 10, 2013; Project acronym: AQUAFIMA Project title: AQUAFIMA Integrating Aquaculture and Fisheries Management towards a sustainable regional...