Colmar is in France, in the Bas-Rhin department. It is famous for Matthias Grünewald's Isenheim Altarpiece.
Note. Colmar is in Alsace, and at various times in the past has been in Germany.
May I respectfully suggest the following:
US Army in WW 2
The European Theater of Operations
Riviera To The Rhine
by Jeffrey J. Clarke
& Robert R. Smith
Wash.,D.C. G.P.O. 1993
...
Colmar Pocket.
The Colmar Region of France was one of the last regions in France that German Forces occupied. This "pocket" of German troops were attacked by elements of the U.S. Seventh Army in...
Many, many things! Historically, Alsace has been a region of both Germany and France, giving it a unique mixture of French and German culture. Because of the international importance of its capital,...