SCS games – Ardennes, The Mighty Endevour, Yom Kippur, Heights of Courage, Afrika, Crusader, Guadalahara hard to think as a series since it covers such a variety. I’ve sold of some of them since they were valuable and I did have alternates, which I thought were better implementations
Command and Colors – have a lot of the expansions so you can keep it together for one large entry.
CC Ancients, Exp 1,2,3 Looking for Sparta
CC Napoleonic – Russia, Austria, Prussia expansions
CC Medieval
Battle Cry
Didn’t care for Memoir 44 as much – I didn’t think the system translated to modern war as well.
This Hallowed Ground – Gettysburg as a monster game – with a price to match
Great Campaigns of the American Civil War (GCACW) – Have all of them now took a while to hunt down Grant takes Command
Civil War Brigade (CWB) – have all the battles but the Bloody Roads South