Hi David
I can't help you with the Sollstärke numbers I'm afraid, but just have a couple of comments to the strength definitions. Maybe Nafziger has something to offer? Unfortunately, I only have his infantry volume.
Sollstärke is not really the number of men in the unit at the time of establishment, but rather the number of men the unit is supposed to have according to it's TOE (which as you know was not neccessarily the same thing, especially in 1945). Iststärke is, as you note, the number of men belonging to a given unit, although not neccessarily the number of men actually with the unit in a fit state at any given time.
Iststärke ("actual strength") and Verpflegungsstärke ("ration strength") isn't actually quite the same thing. Verpflegungsstärke is basically everybody the unit is responsible for feeding, and could include f.e. POWs. However, at the divisional level, the difference between the two is very unlikely to be significant. As such, I do not think there would be a fixed Sollstärke for Verpflegungsstärke, as the latter is ad-hoc by nature (to the extent that it does not coincide with Iststärke).
On a point of detail, Iststärke isn't actually actual strength
, as it includes wounded who are still with the unit, men on leave and elements temporarily detached to other units. The definition that provides actual actual strength is Tagesstärke, which denotes the number of men fit for duty with a given unit at a given time, including any elements temporarily attached to it from other units. Unfortunately, this definition was apparently rarely used.
Finally, there were two different definitions of combat strength - Kampfstärke and Gefechtsstärke. One (I think it is Kampfstärke, but I never seem to be able to remember which with any great certainty) denotes the number of combat troops in combat units, the other all troops in combat units. The difference can be significant, as the Germans integrated substantial non-combat elements at the batallion and even at the company level.
cheers
