Marrying to Military or Marrying Man ??

Lapis
Ugh I feel so confused. 
My bf is about to go to ranger school in a month plus another school after .. so anywhere from 4-8 months... we've lived together for over a year and he wants to ask my dad to marry me. I'm super nervous!
 
I'm really confused about military life and deployments and what I'm a loud to talk about and what I'm not a loud to talk about. 
With his jobs after ranger school his deployments would only be 3 months at most, but soon will be the longest we're apart and I'm really scared about that. 
I know that doesn't sound bad, some SO are deployed for 9 months I know.. but I'm just so confused about this lifestyle. 
Will my kids be traumatized that daddy kills people for a living?? 
I feel super confused on how to go about this. I love him so much it's nauseating but I don't get how to go about this. 
Was anyone confused about this before they married their military man?  Does it feel like you're marrying into the military or you're romantic man who happens to be infantry ..??