Bachie was promoted from the practice squad to the active roster Monday, Dave Birkett of the Detroit Free Press reports.
The linebacker spent training camp and the preseason with the Lions, got released on cutdown day and then signed to the practice squad. His promotion should be an indication that he'll at least play a special-teams role in Week 1 against the Saints. Bachie has played on more than 200 special-teams snaps in each of the last three NFL seasons.