The survivalist mindset is to hunker down and lay low in a sustainable way until whatever problem drove them into survival mode blows over. That means they wait for others to fix the problem before they come back and rejoin society. This is flawed thinking.
If everyone is thinking that, then nothing will ever get done. Survivalists and militiamen need to be one and the same, otherwise those survivalists are going to be on their own for a REAL loooooooooooong time.

A warrior who is a survivalist becomes a militiaman. But a warrior who is not a survivalist becomes a bandit, thug, and land pirate. He feeds off the corpse of what's left of society and takes from anyone he encounters.

On equipment: You get what you inspect, not what you expect.
On training: Our drills are bloodless battles so that our battles are bloody drills.
On tactics: Cheating just means you're serious about winning.