This caught my attention on the Two Fat Lardies web-site - a WW2 Battalion level set of rules in the making (see below, my thoughts are that the "battalion" is the natural "home of the infantry battle" centers in WW" - it is the soldiers "home" - you belong to a battalion, you are part of a Company and your mates are in your Platoon-Squad-Section, but all orbit around the battalion):
http://toofatlardies.co.uk/blog/?p=7958
It may also give me a home for the various 20mm pieces of kit I have acquired during my wargaming journey(see below, a Dicker Mac and a [unpainted] 75mm Infantry Gun from my WW2 German collection):
Another set of rules I should perhaps look at is: "I ain't been shot Mum" by the Two Fat Lardies, which I believe is Company Level in focus (though I do not speak from any expertise here). Which leaves me with a triple of rules [O-group(Battalion), I Ain't Been Shot Mum(Company), and Chain of Command(Platoon)] ;)