Been shot at but never been involved in actually combat against an nation. As I am not a solider or militant.
However, in Gaza back when I used to live there me and a few of my cousins were being chased down by an Israeli apache helicopter.
Something happened that day and as we were leaving they were trying to clear the area, basically trying to scare people off by flying circles around the city I was in.
We were followed somewhat until we reached a block from home. I was a child then and thought it was fun running I had no clue what was going on my older cousin who was also pretty young told me to just run with us.
One on one shooting isn't combat though. Real combat as I've heard by people who experienced it is a intense scene where numerous men are taking part in the effort and people that sign up for it enjoy battle and see it as an honor.
For a single incident though, one time I didn't know what was going on but bullets swayed right past me when I was in a downtown city. Best decision was to get away from the area and I felt almost like stale. Stopped thinking about everything else and my awareness was all towards what occurred.
I've also seen fire in Gaza some rubber bullets some live in one area where Israeli forces had a sort of bridge in southern Gaza and they got attacked their many times.
As for someone actually putting a gun towards you it depends what their intentions are. I've seen someone angry at men who were hitting on girls in a conservative society and harassing girls and a man pulled his gun right at the guys chest and it later ensued into a fight. But, got taken care of eventually but nothing scary just a guy yelling about the man and claiming he will do something about it. But, reality is his behavior is not accepted and people were happy with what he did.