Gerard Butler says there were an “insane” number of injuries when filming his fan-favorite action hit 300 . The Zack Snyder film from 2006 — which marked Butler’s breakout role, playing the fearsome Spartan King Leonidas — was apparently quite war zone on set.

Gerard Butler recalls the difficulties of filming 300 and how many of his co-stars were being taken to the hospital due to injuries.

Gerard Butler injured himself directly before filming Den of Thieves 2: Pantera, making his on-screen pain all the more convincing. The 55-year-old Scottish actor reportedly filmed much of the high-octane heist sequel with one leg completely out of action.

Zack Snyder’s “300” grossed more than $450 million by the end of its theatrical run, but according to star Gerard Butler, that box office success wasn’t without a few casualties. While speaking with People,

"You'd be doing a fight, you turn around, there's a guy down there, a spear went in his eye," Butler recalls of making the 2006 action-adventure film