Looking for a movie, haven't seen it in decades.

[Archae]

Some sort of "communists vs the Americans," both sides were drilling tunnels using some kind of laser.

Anyone remember this one at all?

Title?

[jberryhill]

1. .

[Archae]

5. That's the one! Thanks!

[Anon-C]

2. Is this it?

https://m.imdb.com/title/tt0061387/

Battle Beneath the Earth (1967)
Not Rated | 91 min | Sci-Fi, Thriller

A Chinese general goes berserk and has a system of tunnels dug all the way from China to USA, under the Pacific Ocean! Wherever there is an important military base, he places atomic bombs. US Navy soldiers go underground to repel the invaders.
—Mattias Thuresson

https://en.m.wikipedia.org/wiki/Battle_Beneath_the_Earth

[Shrek]

11. "Navy soldiers"

[Downtown Hound]

3. Battle beneath the Earth

A hilarious piece of Cold War anti-commie propaganda.

[Aristus]

4. One year later, John Wayne would top this hilarious piece of Cold War anti-

commie propaganda with his own piece, The Green Berets, in which the sun setting in the East is only one of its many absurd inaccuracies.

[2naSalit]

6. That one was a full feature length cringe. ...nt

[Midnight Writer]

7. Hope Trump doesn't see this. We really don't need a US Tunnel Force.

[Downtown Hound]

8. We don't need a tunnel force

Just tell Trump there's a Big Mac with his name on it buried underneath China. He'll do the rest on his own.

[Midnight Writer]

10. I'm afraid he would dig in the wrong direction.

[Harker]

9. The cast and crew reads like a who's who of 'who?'

Must've been epic.

[Tommy_Carcetti]

12. Sounds like the plot of the most recent season of Stranger Things.

Which most likely was inspired by whatever movie you were thinking about.