Justified is giving Boyd Crowder a new partner in crime.

TVLine has learned exclusively that ER‘s Ron Eldard is joining the FX drama’s Season 4 cast in the recurring role of Colt, a violent, dark-humored and rule-bending sergeant with the military police.

A veteran of Desert Storm, as well as the Iraq and Afghan wars, Colt jailed Boyd (Walton Goggins) several times during Boyd’s stint in Kuwait, and they became friends.

Eldard joins a Season 4 guest cast that also includes funnyman Patton Oswalt and the returning David Meunier (as Boyd’s double-crossing cousin Johnny).

Justified is slated to return in early 2013.