Has it really been 70 years!?
The youngest of those Marines is at least 88, if they’re still around.
When I was in my late teens in the '60s I often played golf with several WW 1 veterans, some of whom had been gassed in the trenches in France. I was very appreciative of the opportunity to get to know them and hear their experiences 50 years after the fact, and because I appeared appreciative they welcomed and befriended me. That's now a treasured memory for me.
I'm now approaching the age they were then. They'd all be 120 by now...