I was sitting in a small, wood-paneled radio booth in Los Angeles back in the late nineties, doing one of those retrospective interviews that actors of a certain vintage eventually find themselves doing. The host was a kind man, a genuine fan of the show, and he reached into a manila folder and pulled out a grainy, black-and-white production still. It was a photo of the Stalag 13 courtyard, covered in that itchy, bleached-corn-husk “snow” we used to use. In the center of the frame was John Banner, standing tall as Sergeant Schultz, looking unusually stern.

The host looked at me and asked a question I had heard a thousand times: Was John really that lovable, or was it all just the character? I couldn’t help but laugh. My mind immediately drifted back to a Tuesday afternoon in 1967. We were filming a scene where a high-ranking SS general was visiting the camp, and the script demanded that Schultz—our dear, bumbling Schultz—actually look like a terrifying, disciplined soldier of the Third Reich for once.

John was taking it very seriously. People forget that John Banner was a magnificent actor who had been a sergeant in the United States Army during the real war. He knew how to handle a rifle. He knew the posture. He wanted to give the director something truly intimidating to contrast with the usual “I see nothing” routine. The set was tense because we were behind schedule, and the guest actor playing the general was a very “method” type who didn’t like jokes.

We were all lined up in the freezing California heat, wearing heavy wool coats that felt like they weighed fifty pounds. John was positioned right in front of Bob Crane and me. He took a deep breath, adjusted his helmet, and prepared to execute a perfect, sharp “present arms” that would make the general proud.

And that was the moment when the wardrobe department’s handiwork decided to stage a revolution.

It started with a tiny, sharp metallic click that shouldn’t have been there. As the director yelled “Action,” John snapped that heavy Mauser rifle up with the kind of precision we hadn’t seen from him in three seasons. It was magnificent. For three seconds, he wasn’t the man who let us sneak out of the tunnels; he was a stone-cold career soldier. But as he brought the rifle into his chest, the tip of his bayonet—the rubber prop version, thank God—caught a loose loop of heavy decorative braiding on his own overcoat.

John didn’t realize it immediately. He tried to transition into a sharp pivot to follow the General’s path. However, because his rifle was now physically tethered to his hip by the braided wool, he didn’t pivot. Instead, he essentially tackled himself. He went into a sort of slow-motion, spiraling dance, his boots crunching loudly in the fake corn-husk snow as he struggled to regain his balance without letting go of the weapon.

The image was ridiculous. Here was this massive, imposing man in a pristine uniform, suddenly looking like he was wrestling an invisible ghost that lived inside his own jacket. He was hopping on one foot, his face turning a shade of crimson that I had never seen on a human being before. He was trying so hard to remain “Schultz the Soldier” that he didn’t dare drop the rifle, which only made the entanglement worse.

The silence on the set was absolute for exactly two seconds. Then, Richard Dawson let out a sound that I can only describe as a tea kettle reaching a boil—a high-pitched, strangled wheeze. That was the signal. Bob Crane doubled over, clutching his stomach, nearly falling into the prop snow himself. I was trying to stay in character as the “sufferring prisoner,” but my shoulders were shaking so violently that I probably looked like I was having a medical emergency.

The “Method” actor playing the SS General stood there, completely frozen, watching John Banner perform a one-man wrestling match with a piece of string. John finally gave up the ghost. He let out this deep, booming, Austrian laugh that shook his entire frame, and he just slumped onto a nearby crate, still tied to his rifle.

“I think,” John gasped, wiping tears from his eyes while he struggled to unhook the bayonet, “I think the Third Reich has just been defeated by a piece of cheap yarn!”

The director, who had been pulling his hair out five minutes earlier over the schedule, was laughing so hard he had to sit down on the floor. He didn’t even yell “Cut.” He just waved a hand dismissively as if to say, “We’re done for the day.”

What made it legendary, though, was the aftermath. For the next hour, we couldn’t get a single take. Every time John tried to look serious, Richard Dawson would make a tiny “snip-snip” gesture with his fingers, and John would lose it all over again. We ended up having to wrap the scene and come back the next morning because nobody could look at John Banner without seeing him spiraling in the snow.

John was such a sweetheart about it. He spent the rest of the afternoon going around to the wardrobe ladies, apologizing for “assassinating” their beautiful coat. He had this way of making everyone feel like the mistake was a gift he had given us to lighten the mood. He knew, better than anyone, that the show worked because we genuinely loved being in each other’s company.

Whenever I think of that photo now, I don’t see the stern sergeant. I see the man who was so big, so kind, and so full of life that even a military uniform couldn’t contain him. We spent years filming a show about a dark subject, but men like John made sure the sun was always shining on our side of the barbed wire. It’s funny how the moments where everything goes wrong are the ones that actually make the job worth doing.

Sometimes the best way to handle a “serious” moment is to let the uniform win and just start laughing.

Do you have a favorite memory of a character who was “tough” on the outside but a total softie in reality?