Wethepeople01, Your thread started began with "many of us deliberate" which indicates you have thought about it. Yet, you failed to mention your answer. Well??
I don't have to deliberate. I have not been to war. I went to what was called a Conflict in Nam. Yes, I had a M1911A1, but my primary firearm was an M-16. A handgun is not a practical or even a sensible go to war firearm.
Generally, you do not think about what you will take to war. You are trained by the branch of service you are in with the weapon which will be issued to take into combat.
One of the most effective instruments you might have access to is a good communications device like a radio. With it, you can call in artillery fire support, combat air support, additional troop support, supply support and even medical evacuation support.
There is no comparison between your everyday carry weapon in peace time in a civilized nation than a go to war weapon in a battlefield environment. It is a comparing grapes and coconuts.