I was an avid fan of the Avalon Hill games in my HS and College days. I owned probably 20 different games at that time. Two of my all time favorites were Blitzkreig and Battle of the Bulge. These were followed closely by two Naval games - Midway and Jutland.
Here is a photo of my well worn Battle of the Bulge game that I still own and get out and play solo occasionally.
I am also an avid Civil War Gamer even today. I belonged to the American Civil War Game Club (http://www.wargame.ch/wc/acw/) for several year before I moved on to other pursuits. They still use a database program I wrote for them to keep all records of every fight logged by members of the club over the years. The games played here are computerized board games by John Tiller and others that cover all the major battles of the Civil War. Games are played by Email sending zipped files back and forth.