This Order was created July 29th, 1942. It has three classes, each with its own insignia and service ribbon.
For further details see each separate class.
There are three versions of the medal. The first version (Type 1), is suspended from a square hanger. This was succeeded by a version (Type 2) with screwback. The two parts of the decoration were connected with three rivets. The last version (Type 3) is struck out of one plate and has no rivets. This version has a screwback as well.