Cheating culture in the military

Hey guys, I'm writing this because I want supportive and understanding voices in my corner.

My boyfriend is in the military, haven't married yet because we both agree we don't want it to rush it just so he can make more money. He's US Army.

He gets annoyed with the people he works with because they openly cheat on their spouses and they actively encourage him to cheat on me. He's not a high rank so he just brushes it off with statements like "I'm trying to keep what I have" and other such things. Him and I have conversations every now and then about how this culture exists in military life, we're close friends with members of other branches and they see this behavior too.

He had one guy above him that was actually a family man and didn't say anything off color but that guy is off to bigger and better things now and it seems he's just completely surrounded with men that promote infidelity. I've expressed to him that it worries me because we both understand that you are the people you associate with and for months out of every year he is forced to associate with them.

I definitely do trust him, I'm just really some type of way that this culture is so deep in our armed forces. My boyfriend agrees, they're supposed to be people that set the example and he's disgusted by the things they encourage him to do.