Zac Efron Shares The Movie Scene He Will Remember "For the Rest of My Life"

This scene is deep in the trenches—and deep in Zac Efron's brain.

In the actor's '70s-set new movie, The Greatest Beer Run Ever, he plays young man John "Chickie" Donohue who journeys to Vietnam to bring soldiers fighting on the frontline a beer as a show of support amid the Vietnam War. And as the 34-year-old exclusively told E! News, one scene in particular from the movie, which is based on a true story, "is ingrained in me in a way that none of the other ones are."

As for which scene Zac is referring to in the film? It's one where Chickie, quite literally, winds up in the trenches alongside soldiers.

"I'll remember being in that trench for the rest of my life," The Greatest Showman actor told E! News. "It's weird, like visually I can spell it out by the minute, and we were there for like three days straight."

He added, "The trench slowly filled up with water and we could see mosquitoes just roaming off the surface and then would sink back down. It was mesmerizing."

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Mesmerizing indeed, but maybe not the most ideal place to actually make a movie. After all, Peter Farrelly, who wrote and directed the film, exclusively told E! News "it was not smooth sailing” when it came to filming.

"We were in the jungles of Thailand," he said. "It was 100 degrees, 100% humidity. It was muddy, rainy, you know, buggy, snake-y, so it was harder than any movie I've ever made."

But Peter noted that it was all worth it as the conditions painted a realistic picture on-screen.

"I think it comes across like when those guys are in the in battle there, you could feel that they're exhausted, they're tired," the Green Book director said. "They really are muddy, and I think it makes it more real."

And the film even has the real Chickie's stamp of approval. Peter added that the most gratifying part of finishing the movie was simply, "That Chickie Donohue loves it."

The Greatest Beer Run Ever is streaming now on AppleTV+.

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