So after some consideration during my holidays over the last week, I decided to start looking at a very specific battle: the Jarama. A major reason behind this is the fact that I not only live in Madrid but also at (literally) a 10-15 minutes drive from the place where the actual battle took place in February 1937. One of the attractions of this battle is that it involved a great variety of forces, including "crack" units from both sides and overall it was quite balanced. It provides too some optionality if I like to extend this into a full campign using Jarama and Guadalajara.
I have also found some interesting information in the web related to routes in the battlefield, visits to the remnants of the fortifications and trenches ... and even a museum about the battle itself... located in a local restaurant (astonishing discovery!)
I have already gathered some books about the battle from my own extensive SCW library...
And best of all, no need to paint any single model: I have tons of 20mm minis, AFVS, guns...just ready to go straight into battle.
PS @ 10/January: Coincidentally Alfons, a senior Spanish wargamer and blogger, has written a couple of interesting post here (in Spanish) with his early attempts to wargame the SCW in the late 70s. These posts include some home-made rules made by him and a group of aficionados. Worth taking a look