Its just that I've put in a lot of hard work to get the traffic is where it is currently
Some people may seem to take it easy while making a good passive revenue, but usually that's only after years and years of unrewarded hard work, with many initial failures along the road.
The big success stories you hear in the news... well they're in the news because it's the exception. For most of us, it's just like in the real workplace, every dollar is hard earned. Except that it's your business, which makes all the difference.
The trick is to create commercial oriented articles that attracts people ready to spend money, in an area that is not too competitive and where you are knowledgeable. It's not always that simple though.
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.