What skill from military service became most valuable to you after leaving the military and why?

Teamwork.
Perspective.
Finish the job.

Not stressing over the little things.

I often time hated working in logistics, but it definitely made me more resourceful. That's an attribute which has definitely served me well in all aspects of my life.

On the lighter side of this post ,my first job after the Military was entry level,mopping and buffing floors,cleaning toilets, all skills I was taught very well in Basic,later after I progressed to digging ditches that's where my MOS really came into the fore front,yes ladies and gents, Infantry! But really the Service gave me a can do ,mission first ,attitude that stood me in good stead for my 43 year career in the electric utility field.

Attention to detail & how to troubleshoot. Submariners know their ship.

I went from military to civil service upon retirement and I found the "can do" attitude has worked well for me..

Even though I transitioned from military law enforcement to civilian, my military job experience didn't help me much because of the huge differences between military and civilian LE. However, I did learn many skills that helped me in my civilian career. Most of those are fairly generic to any MOS though. Such as being organized, working with a team, working under extreme pressure, pushing myself to extreme limits, working with folks from different cultures and backgrounds. And mostly learning to appreciate folks that were different from myself.

Sleeping anywhere
Pride in work.
I would say team work but... A lot of Civilians don't get the concept very well. A lot of me me me going on there.

The confidence to know I will overcome any obstacle I encounter in life.

Still in the military. You know what skill I think will be the most beneficial. Learning to deal with the vast amount of stupid things you have to put up with during your time in the military. You don't get a choice but to deal with the stupid things daily while you're in, especially if you're lower rank, so you deal with it, you get angry about it, and then you get a twisted dark sense of humor about it and move on. So when you get out stupid things you have to deal with in your civilian career, don't even affect you, or they don't make as big of an impact on your life any more. "Oh what Dave from accounting got a DUI over the weekend? Really he got fired, you mean to tell me the boss isn't going to make us work overtime to cover him, or send us all to AA meetings because he screwed up? Awesome!"