No captain in the BPD rank structure?
I was just curious about that, but we don't see a single captain officer of the Baltimore PD during the entire series.
Besides, Cedric Daniels was promoted from lieutenant straight to major (the same happened to Dennis Mello, I think), and Colvin was demoted from major to lieutenant after the Hamsterdam thing became public.
I wonder if the writers did it just to keep the dynamics of the narrative or if there's any basis for that.