What you left out was the lack of "communication" ability. That was the worst part of my husband being deployed to Nam.
No computers, no emails, no cell phones. I wrote a letter day..BUT letters to the States and back could take weeks.
Phone calls had to be "set up" for R&R time and cost about $100 per call.
I was just a kid when Spectre and I were married :)..Shortly after he left for Nam, I had emergency surgery. The Red Cross had to get hold of him, and he called me in Virginia via ham radio. It took a full "week" for the Red Cross to find him.
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Spent more than 2 years over there, didn't receive a letter for the last 18 months. A lot had to do with the situation that was occurring in the States. Got a packet of letters sent to me while back home months after I'd returned. All forwarded to home of record.
I was aware of the USO's efforts but they were overwhelmed and calls couldn't be coordinated. The Red Cross was for emergencies only.