Do not be uncomfortable because of the tough faces of the military person with whom you are going to meet.
He may start to tell various kinds of stories related to war.
Side by side you should try to know the topic he likes to discuss.
Ask question to him about war as they like this kind of conversation.
Even if he does not like to discuss this kind of topic then also he will be happy to think that you are interested in war.
As no one is allowed in anywhere near the border areas, so you have to find the other best ways to date an army on your own turf.