I think I've been re-infected with the Historical Bug. When I first got into this hobby, my plan was to do 15mm SF, and accordingly, I bought a pile of figures, terrain, rules, paints, etc.
I don't know if it was my fear of painting, but I soon caught Ooh Shiny Disease, and started researching a project in 28mm FIW skirmish.
The more I read about the history of the era, however, the more interested I became in learning about European tactics of the era. If the North American tactics were so new and so different, what exactly were they different from.
I read – a lot – of military history as a kid, and even afterwards, but never the excellent and in-depth kind of stuff I'm reading now, the Christopher Duffy and the Brent Nosworthy.
To understand small unit tactics I started with Force on Force (and Tomorrow's War). That got me intrigued about the origin of some of those tactics, which led me (back) to the French and Indian War. Which got me interested in European linear warfare in general, and especially the career of Frederick the Great.
I'm more interested in reading history and rules right now than I am in modeling or painting. I'm even planning on using (unpainted!) proxies, like Risk figures and Legos, to test out several rulesets, before I commit any more resources to miniatures or terrain.
Interesting how even when I was planning a sci fi campaign I was reading so much about historical battles. Also interesting to note just how addictive history can be, as most of my "historical era" gaming will probably end up being Imagi-Nations or some version of Sci Fi in the long run.
I just can't put down the Christopher Duffy books, unless it's to pick up something equally enthralling about a similar subject. Even to plan an imaginary campaign, by imaginary armies, led by imaginary commanders of imaginary nations.