Two Luftwaffe soldiers with the rank of Gefreiter (left) and Obergefreiter (right) posing their smile. They were both wearing black glasses a.k.a. shades. This picture comes from a collection of Akira Takiguchi, a moderator in Wehrmacht-Awards.com. Based from the text above, it was taken from the album of the 3.7cm Flak crew, even though it is possible the two guy in this picture is not a member of Flaktruppen (which usually wearing red collar tabs).