Its main sponsor was the Pall Mall cigarette brand; Lee Marvin, the program's star, appeared in its commercials during many episodes.

[3] The popularity of M Squad was proven in the ratings wars by the NBC network choosing a Friday night time slot opposite Frank Sinatra's ABC variety show in the fall of 1957 and Phil Silvers' long running CBS comedy, Sgt.

The theme music for the first season was composed by Stanley Wilson,[4] who won the 1959 Grammy Award for the Best Soundtrack Album and Background Score from Motion Picture or Television.

[4] A soundtrack album, Music from M Squad, with liner notes by Lee Marvin, was released by RCA Victor Records in 1959 during the last season of the show.

On November 4, 2014, Timeless Media re-released the complete series on DVD in a new 16-disc special edition collection that contains an entire disc of bonus content.