How do you save more than once on ARMA 2?

Arma 2 is a game that breaks easily. Just now, I had to revert to a previous save after having come out of a battle unscatthed because my chopper pilot is a moron.

I remember there being a way to save more than once in operation flashpoint, it involved going into the saved files and deleting the previous manual save, which allowed the player to manually save again. It’s bothersome but better than not having a save at all.

How is it done in ARMA2? What files should I go into and delete? I don’t want to mess with the system without knowing what I’m doing.

Also, is there a mod that treats you like an adult who can save whenever he wants?