To satisfy my curiosity, just how many infantry battalions and cavalry regiments for all sides do you have for the Seven Years War? However large or small your collection, it is superb.
I was wondering that myself a couple of years ago, so started a spreadsheet...

Units are generally 12 or 16 figures. In most cases they're a battalion or regiment, but some nations liked HUGE cavalry regiments, so the unit might be a half-regiment, while others liked tiny regiments, so the unit might represent a brigade.
Prussians: 43 Inf, 11 Gren, 9 CR, 5 DR, 12 HR, 6 LI & 14 Guns
Austrians: 40 Inf, 7 Gren, 12 CR, 11 DR, 11 HR, 16 LI & 20 Guns
Swedes: 10 Inf, 3 CR & 4 Guns
Reichsarmee*: 32 Inf, 6 Gren, 3 CR, 3 DR & 8 Guns
Saxony: 1 CR & 3 DR
Bavaria: 10 Inf & 1 Gun
Wurttemberg: 10 Inf, 3 Gren & 1 Gun
Great Britain: 6 Inf, 1 Gren, 2 CR, 2 DR & 5 Guns
France: 20 Inf, 4 CR, 1 DR, 1 HR & 6 Guns
Hanover: 8 Inf, 1 Gren, 1 CR, 1 DR & 4 Guns
Hessen-Kassel: 1 Inf
Schaumburg-Lippe: 1 Inf & 3 Guns
* NB The Reichsarmee total also includes various Imperial auxiliary regiments such as the two Wurzburg regiments, Mainz-Lamberg, etc. Three of the Bavarian battalions also do double-duty with the Reichsarmee, as does the Bavarian and Wurttemberg artillery.
So that's 233 battalions and 85 cavalry 'regiments'. God, that's a lot more than I realised...

Total painted figures, including generals and bottle-washers: 3,217 Foot, 1,354 Horse & 66 Guns.