Were Vietnam tunnel rats volunteers?

Were Vietnam Tunnel Rats Volunteers or Drafted?

Okay, lemme tell ya what I think 'bout Vietnam tunnel rats.

So, the U.S. Army had specific tunnel units. Sergeant Woods led one, right? They got trained up proper. Found that bit out from a documentary, can't recall the name exactly, but it stuck with me.

But here's the thing, most tunnel rats? Just regular grunts who volunteered. No special schoolin' or nothin'. Always felt like a crazy brave call to step up for that.

Now, were they drafted directly into tunnel work? I dunno, not really, seems more like guys already in the infantry saw a need and said, "I'll do it." My uncle, bless his heart, was infantry. Never a tunnel rat, but he talked 'bout guys steppin' up for the worst jobs. I get the feeling it was kinda like that. So, largely volunteer.