Curio & Relics License/Militaria Collectors

I studied German history, specifically the Third Reich and the Second World War, in college and have been collecting various pieces for a while now ranging from small arms, uniforms, documents, etc.

I've been considering getting a C&R license to make everything smoother. Just wondering if anyone here enjoys the hobby/collecting militaria and historical artifacts and if anyone has a C&R license? If so, what are your thoughts on it? Is it worth it?

Not sure that this entirely relates to this board, but the OB did seem like the most appropriate place to ask. So, thanks for any advice, tips, or even discussion anyone would like to have.