"I spent three years of my life, full time, making that documentary," he now says.
Initially, Timmis funded the filming with his own money, but that ran out all too quickly. He says he solicited support from what seemed like "every company in America" without any luck at all.
That's when he got the idea of contacting South Korean firms to ask if they'd be interested in helping to fund a documentary about American veterans of that war. Almost at random, Timmis sent letters out and got a response almost at once from one company, and boldly asked for a $50,000 contribution.
"A few days later, I had the $50,000," he recalls. "It was a miracle, really."
One of the more interesting techniques of Timmis' film is the use of comic-book style drawings by Justin Case to illustrate some of the stories of wartime action. Those scenes are narrated by Mark Hamill, often reading from the official commendations for combat citations like the Medal of Honor.
At first, these sequences of drawings feel cartoonish; but that sensation soon fades. What remains is a feeling of astonishment at what some of these men actually did in the midst of mind-blowingly brutal combat, most often to save their fellow soldiers. No picture, whether it's on film or drawn by an artist with pen and ink, can convey the true horror of those moments.
Timmis' quest to honor the memory and memories of Americans who fought and died in Korea lasted three years, just as long as the war itself.
What surprised him most about making the film, he now says, was discovering "the sense of service these people had back then."
Some of the veterans he interviewed had fought in World War II and volunteered or were called back to fight in Korea. A few even volunteered for service in Vietnam.
That came as a shock, says Timmis, for someone like himself who knew virtually nothing about the Korean conflict.
By the time he was finished, he adds, "Their sacrifice and patriotism kind of blew my mind."