What's more, with the kids (India, 4, Tristan, 2, and Sasha, 2) back in Los Angeles with their grandparents, Chris and Elsa's days filming felt like a "working holiday" for the couple.
Hemsworth revealed how the idea for the family work environment came about, saying, "They said, 'Look, we are big fans of your wife, and we would love it if she came and played your wife in this,' and I said, 'Great!'"
Horse Soldiers, based on Doug Stanton's non-fiction book of the same name, follows a group of U.S. Special Forces sent to Afghanistan to fight against the Taliban after the attacks of September 11, 2001.
Hemsworth revealed that the cast went through a three-week training program before they began filming in order to form a bond between them and get a real sense of what it's like to rely on each other in the battlefield.
"It was a lot of weapons training, a lot of movement training," Hemsworth said. "It was great, because you can't really fake this stuff."