Just an observation, with a military web site, make sure you read Adsense TOS regarding content on weapons and such, I don't think they're allowed.
Just did a quick overview of the AdSense policy:
Sales of weapons or ammunition (e.g. firearms, firearm components, fighting knives, stun guns)
I don't sell any weapons, so I don't think this will be a problem.
Thanks for the other tips.
I've been doing this for many years though, since 2008. It is only recently that I've been able to earn $20 per month at a stable month by month basis. But my website requires constant articles to be made to increase traffic and get access to a lot of SERP results.
It is hard and I'm at some stages I DO get burnt out, but I just keep going and say there are bigger rewards! - I mean I used to do this with the love of creating websites and especially this niche, but over the years I think I've become desperate. LOL