Confused about wic?

Tehkeeyah • I'm a army wife and this is my second pregnancy. I had a miscarriage and hoping this one is a healthy baby
I'm in this pregnancy group in my town and they were telling me I should go get wic for my son. I'm 6 months and I was thinking about it but wondering how exactly that works. Wouldn't we make to much ? My husband is a E4 and they said they only go off the Bas pay. Anyone else have it and how hard was it to get it.