There were 100 million viewers for the final episode. The 121.6 million viewers that tuned in to the finale made it the most-watched in American TV history, and contained 77 percent of all television viewers that evening. That is a third of the current population of the U.S., and is a larger number than the population of 221 of the Earth's countries.
You think you're real smart. But you're not smart; you're dumb. Very dumb. But you've met your match in me.
Franks Burns and Hot Lips Houlihan's affair would have been far more scandalous in the 1950s setting of the series than in the 1970s/1980s airing. Since Burns was a married man, violations of military law would have been an issue and the affair would have quickly ended or resulted in both being removed from the service.
The pilot episode opening credits (only seen in original network airings and on DVD and video releases), feature the legend "KOREA, 1950. A hundred years ago..."
The episode "The Army-Navy Game", features a jazzier version of the opening theme.