ORIGINAL: vahauser
Here is a summary of a German infantry division TOE from 1939-41. Based on numbers of LMGs, can you derive ballpark estimates of the number of combat squads (rifle, heavy rifle, engineer, assault, etc.) in the division?
I don't think so. For one thing, a lot of those LMG's are in artillery units and such. They would come into play if the batteries were attacked directly, but otherwise would remain unused.
You will find more LMG's in direct combat units in direct combat units such as AT battalions. However, even these wouldn't become rifle squads joining an attack (or defense) under most circumstances. The troops would continue to serve their AT guns -- not abandon them to join in the attack or form additional rifle squads to bolster the firing line.
There are a number of positions that can be legitimately taken here. I strongly favor looking at who does what in a typical battle. That is, do the MG's with the signal battalion sit idle while the signallers signal, or do the signallers typically say 'screw communications' and join the battle?
I also strongly favor being consistent. It obviously won't do at all to decide Force A's artillerymen can fight as infantry at the same time as they serve their guns, but force B's can't.