Why does Scientology have a military, do they plan to use it for anything?

I was reading through someone’s question earlier, and I saw scientology, which made me think of the time I saw a scientologist in uniform when I was out having lunch.

Do they even use this military? Is there a purpose to it? Do they have access to weapons, military vessels and things of that nature? It’s kind of a disturbing thought that this “religion” has a military, and they call it Seaorg.

Anyone know what’s up with this?