Marietta-Cobb-Smyrna


Major John Koehler, Assistant Division Commander

A twenty-two year veteran of the Cobb County Sheriff’s Office, Major Koehler has served in multiple assignments within the agency during his career. Prior to assuming his current position, he was an undercover investigator in the Narcotics Unit as well as serving in various capacities in the Detention Division, Internal Affairs Unit, Court Security and in the Civil and Warrant Sections. During his career, he has received advanced training and specialized in the areas of narcotics investigations and undercover operations. This training and experience prepared him for his role as Unit Commander of the MCS Narcotics Unit, a position he has held since 1995.


The Marietta/Cobb/Smyrna (MCS) Narcotics & Intelligence Unit is a multi-jurisdictional task force formed in 1980 and commanded by a Major from the Cobb County Sheriff’s Office, with a primary mission of drug interdiction within Cobb County. Initially, the unit was comprised of personnel from the Cobb County Sheriff’s Office, Marietta Police Department, Cobb County Police Department, Smyrna Police Department and the Cobb County District Attorney’s Office to bring the necessary manpower and resources together in a cooperative effort to bring drug dealers before the criminal justice system.

In 2001, the Unit added personnel from the Acworth Police Department, Kennesaw Police Department and the Georgia National Guard. The agencies work together in a cumulative effort to stem the flow of illegal substances, organized crime and vice crimes within our community.


"Leadership Through Service"
Updated:2/10/2004

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