Enlisted May 1970, U.S. Army.
My draft lottery number was 44, Nixon had ended 2S (student) deferments the previous November, allowing us to finish the spring semester but, if our number came up after that, we were toast.
Opted for rotary wing training, as I had a pilot's license, thinking I could then choose my assignment.
Wrong. Wound up in CCN south of Quang Tri, and had the dubious honor of flying for 117 hours straight -- 15 minute catnaps here and there during reload and resupply -- in the liberation of that provincial capitol in June 1972.
Field commissioned in 1972. We'd lost our 2LT over Cambodia, where we "weren't." Filed my after-action report with the CO, who told me he had something for me to sign. I could read it upside down, and I said "NO! Sir. I'm not signing those papers." He came around the desk, got in my face, and said, "Son, I need an LT, and you are by G[osh] him! Now sign the d[ang]ed papers!"
That's how I got a 20-year career as a combat officer and helicopter pilot. Took OTS and reclasslified in Cobras (I was a Huey pilot up 'til then), did the first deployment of the redesigned Apache in Desert Storm and decided after that I'd been in Uncle Sam's service long enough.