Photo: John Nowak/Turner Entertainment Networks, Inc.

Alan Alda Rollout

When it premiered on Sept. 17, 1972,MAS*H, the comedy-drama series following a team of American doctors and support staff stationed in South Korea during the Korean War, was a risky venture. Would its often dark humor connect with an audience divided over the real-life conflict in Vietnam?

“I’m not sure we ever knew what kind of impact it was having,“Alan Alda, 86, who starred as Capt. Benjamin Franklin “Hawkeye” Pierce, tells PEOPLE in this week’s issue.

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Alan Alda Rollout

“It took a while to catch on, lingering near the bottom of the ratings for the first season,” says the host of theClear + Vividpodcast. “We got used to coming to work, doing the best shows we could and not worrying about the numbers. By the time that huge audience watched the last episode, we were kind of shocked.”

In an email interview, Alda (who revealed he wasdiagnosed with Parkinson’s disease in 2015) shared behind-the-scenes moments that still resonate with him and how he hopes the show will be remembered.

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Alan Alda Rollout

What goes through your mind anytime someone mentionsMAS*H?Alda:Gratitude that what we did all those years ago is still on people’s minds.

Does it feel like it’s been 50 years?No, it seems more like 100. It feels like it happened to a totally different person. Fortunately, though, this person still lets me live in his house.

Take us back to that first day on-set. What do you remember most?After 10 days of rehearsal, I was standing behind the door of the aluminum building waiting to shoot the first scene of the first episode, and I still didn’t feel like I knew how to play this character. He didn’t seem anything like me. It was a silent shot. All I had to do was walk across the compound, but I wasn’t convinced I could be this guy who drank too much, hit on women and was something of a smart aleck. When I heard, “Action!” I stepped out onto the compound and saw a nurse headed toward me. I’d never seen her before, but I made the instant decision that she and Hawkeye had some kind of relationship and gave her a little hug. She played along, we exchanged smiles and walked on. I had a little extra spring in my step. “Okay,” I thought. “I’m him.”

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Alan Alda Rollout

What were your favorite moments from the production?The laughing and kidding as we sat for hours together between shots. We were pals.

If the series were to be rebooted, would you change or tweak anything?I can’t see how it could be. It was a lucky gathering of producers, directors, writers and actors that contributed both a sense of the times we were in and a critique of those times. For instance, Loretta campaigned hard to have her character not be seen as a one-note joke. When her character’s name in the script went from “Hot Lips” to “Margaret,” it was a reflection of how she succeeded in that. And in the scripts I wrote, I worked on giving Hawkeye the chance to have genuine relationships instead of the schoolboy skirt-chasing he started with. We weren’t always successful, but we were on it.

Why do you think viewers were so drawn to the show?I have a feeling that the audience may have sensed that we were aware that real people had lived through events like these and that we were trying to respect that.

source: people.com