He received his basic education in the small settlement of Mupperg, and later became a bricklayer, working on several construction sites in the area.

[1] In 1910, he started studying at the Kunstgewerbeschule (school of arts and crafts) in Düsseldorf, where Wilhelm Kreis was professor at that time.

[1] In December 1926, Munzer participated in a contest held by the Bund Deutscher Marineverein for the design of the Laboe Naval Memorial near Kiel.

[2] He was declared the winner of the contest on 15 May 1927 although his design concept, a 72-meter-tall (236 ft) tower, was considered too expensive.

In 1954, it was transferred back to the Bund Deutscher Marineverein, and Munzer was responsible for its restoration and modification.