Albert,
They were an ARVN armored tank company. I believe they were only on our range for one day. I think the mine scared them off.
If you look you can see a string of fish Lt Cole (in the middle) is holding. We caught them with a hand grenade. While the bodes were collecting the fish they saw a boa constrictor in a cave just above the water line. They put their bayonets on their M16's and stabbed it to death. It took 5 bodes to hold the snake. I took a picture of it but apparently too dark in the triple canopy and didn't turn out. That night we ate snake, turtle and fish. Doesn't get any better than that!
I got my orders to return back to the world. An Air America chopper picked me up (you can see the 2 guys behind talking him in). We flew over to our sister battalion who had been fighting the previous day and they threw in 3 dead bodes. 4 days later I stepped off the pane in Oakland, CA. I thought then that the war was over for me. Only to find out that it's never over.