You're going to have to be a little more specific with what your asking as there was no set rule for german camo. Soft colouring is just from faded paint. If you mean soft edged camoflage, you can either use soft masks for the pattern, or just free-hand it. Soft masks, by the way, is a mask of the pattern raised slightly off the surface to allow a little overspray from the airbrush to blur the edge between colours. And if by late war camo, you mean ambush, you just paint your base camoflage, and make a mask of the pattern of either "blowing leaves" which was triangles or streaks, or "forest shaddow" which was circles, and use that to spray on your spots.