M Squad is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 police drama

Police procedural

The police procedural is a subgenre of detective fiction which attempts to convincingly depict the activities of a police force as they investigate crimes. While traditional detective novels usually concentrate on a single crime, police procedurals frequently depict investigations into several...

 television series that ran from 1957 to 1960 on NBC

NBC

The National Broadcasting Company is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago...

. Its format (and opening credits) would later inspire the creation of spoof

Parody

A parody , in current usage, is an imitative work created to mock, comment on, or trivialise an original work, its subject, author, style, or some other target, by means of humorous, satiric or ironic imitation...

 TV show Police Squad!

Police Squad!

Police Squad! is a television comedy series first broadcast in 1982, created by Zucker, Abrahams and Zucker and starring Leslie Nielsen. A spoof of police procedurals, the series was packed with ZAZ's usual sight gags, wordplay and non sequiturs...

Its sponsor was the Pall Mall

Pall Mall (cigarette)

Pall Mall cigarettes are a brand of cigarettes produced by R. J. Reynolds Tobacco Company in Winston-Salem, North Carolina, and internationally by British American Tobacco at multiple sites.- History :...

 cigarette

Cigarette

A cigarette is a small roll of finely cut tobacco leaves wrapped in a cylinder of thin paper for smoking. The cigarette is ignited at one end and allowed to smoulder; its smoke is inhaled from the other end, which is held in or to the mouth and in some cases a cigarette holder may be used as well...

 brand; Lee Marvin

Lee Marvin

Lee Marvin was an American film actor. Known for his gravelly voice, white hair and 6' 2" stature, Marvin at first did supporting roles, mostly villains, soldiers and other hardboiled characters, but after winning an Academy Award for Best Actor for his dual roles in Cat Ballou , he landed more...

, the program's star, appeared in its commercials

Television advertisement

A television advertisement or television commercial, often just commercial, advert, ad, or ad-film – is a span of television programming produced and paid for by an organization that conveys a message, typically one intended to market a product...

 during the episodes.
Set in Chicago, Illinois, it starred Marvin as Detective Lieutenant Frank Ballinger, a member of "M Squad", a special unit of the Chicago Police

Chicago Police Department

The Chicago Police Department, also known as the CPD, is the principal law enforcement agency of Chicago, Illinois, in the United States, under the jurisdiction of the Mayor of Chicago. It is the largest police department in the Midwest and the second largest local law enforcement agency in the...

, assisting other units in battling organized crime, corruption and violent crimes city-wide.