Do military personnel focus on their career more then the brotherhood side of the military?

It all depends on what you want. If you want a career in the military then you should always be trying to improve yourself. As you advance your peer group will change and they will have many of the goals you have. Some if the strongest bonds I had were later in my career. Many young enlisted not sure of what they want so bonds that seem tight now easily fade away.

there will always be BROTHERHOOD and networking with your brothers will get you a good CAREER.

Private Bollinger...because Servicemembers are very "transitional," thinking about building any kind of relationship, other than a working relationship, it doesn't happen. You do make friends, because you'll have similar experiences at your current unit, but when you PCS, you are gone and will make new friends. I served twenty-plus years in the military and I have no idea what happened to anyone I knew before. "Brotherhood" is a term you see in the movies. It's the same thing in the civilian world, everyone is very "transitional."