Hey Jeff,
I've been considering selling a lot of books lately, but I probably won't do that until I absolutely must. A problem that can occur with this philosophy is that you won't get a decent buck for your books if you have to sell them quickly. eBay is probably the best bet, cause in 7 or less days, all of your books can be gone. The boards are nice, as you know they'll be going to friends, but $ sometimes is more important when comparing friends and your bills.
If you're scratching your head wondering why you collect, then you should probably sell your books off. You may want to do as Mick mentioned and pull out some of your better ones and have a good look at them. That may sway you into keeping them. If you still love your war books and can make ends meet without selling them, you'll probably be thankful later for keeping them.
In the end, it's your and your family's choice. Good luck! (thumbs u
Andy