To this day I have no idea how I knew what I knew.
We were an intelligence operation about 50 yards behind an infantry platoon. They had called us on a wired landline to tell us there was an enemy tank just over a hill nearby and we had jumped into our foxhole. So there we were, scared, waiting it out.
I saw the future. In my mind's eye: I had a vision of one of the infantry guys strolling up to our foxhole and telling us it wasn't a tank. I realized the reason they hadn't told us before was because our landline wasn't working though there was no way to tell at the time. I saw the sky lightening behind him and knew the exact spot in which he would stand. This was all in my mind.
Hours later an infantry grunt stood in that exact spot, with the light from the sky exactly right, and told us they'd been trying to get through to us on the landline and that it wasn't a tank.
I would call it deja vu but I'd had that before and knew it wasn't the same. This was hours before, and I knew what was going to happen.
Nothing like that has ever happened to me since.