They have a ton of photos, threads, stories, etc. there. Some of the staff and regular posters are WWII vets or the children of WWII vets and their knowledge is amazing. Definitely use the search feature before jumping in and posting. I have the same user ID there as I do here, but rarely post.
The board is well run and asshats are given a quick boot and some public shaming, though not always in that order. :)
For pure history's sake, that site has a lot of things to offer. You don't even need an account to lurk or use the search button.