Very Interesting and Scarce WW2 German Christmas Message to Elite Regiments

This is a simple single piece of paper dated for 1940, it carries the German eagle and swastika with J.R. 365 to either side, the message below translates as 'in memory of the advance of the regiment from the Rhine to the Atlantic', bottom left it has Weihnachten, in felde (Christmas in the field) and it was written by Dr. Hulle Oberstleutnant to the regiments. It comes in very good condition with some signs of age and has a crease along to the top edge, it measures 8 inches x 6.