Captain Robert Duncan is currently assigned as the Division Commander for the Patrol Division. He was
promoted to the rank of Captain in November of 2021.
Captain Duncan has been employed with the Waterloo Police Department since 1997. He has held
assignments on Patrol both on Watch II and III while serving as a Field Training Officer (FTO). In 2000
he moved to the Detective Division where he spent 14 years as a General Crime Detective. During his
time in the Detective Division he served on the FBI Joint Terrorism Task Force and became the first
Polygraph Examiner for the Department. In 2004 he was awarded the Waterloo Police Department
Officer of the Year.
In 2014 Captain Duncan was promoted to rank of Sergeant and worked in the Patrol Division and as the
School Resource Officer (SRO) Supervisor. In 2019 he was promoted to the rank of Lieutenant where
he was in charge of the Detective Division, which consisted of General Crime Detectives, Safe Street Task
Force, Crime Lab, SROs, and Violent Crime Apprehension Team.
Captain Duncan has served as a member of the Tactical Unit for 17 years, an Active Shooter Instructor
and served on the Waterloo Police Protective Association Executive Board.
Prior to becoming a member of the Waterloo Police Department Captain Duncan was employed by the
Black Hawk County Sheriff’s Office. He attended the Law Enforcement Academy Class of 144.