I have tentavly identified this soldier as a member of one of Imperial Germany's Seebattalions which were roughly equivilant to the United States Marine Corps and the Royal Marines. He could also be a member of the German Army Schutztruppen units. He appears to be wearing a uniform intended for overseas deployment. The hat with its cloth neck protector would tend to indicate a tropical station. The bold "Auf Wiedersehen!" title on the card mount implies that the photograph was taken just prior to this man shipping out to his overseas posting, possibly the Boxer Rebellion in China (1900). Cabinet Photograph R. Schubert - Photographer Berlin W. Potsdamerstr. 3, Germany c 1900