I've been lurking here for years, and since I often send people this way, I figured I better join myself. I'm a WWII Historian (no really, I have a degree and everything) who often gets asked to identify patches or items. Most of the time I can find it in one of my source books, but occasionally I get stumped so I come here and look. 9/10 times I can find the answer pretty quick.
I am the lead admin for a popular WWII and Military History group on Facebook operated by he History Alliance© based out of San Francisco, CA. If you want a direct link to check it out, please PM me.