Cromartie-Smith spent time over the previous for seasons on the Steelers' active roster and practice squad.
Washington controls their rights through the offseason, and the players will be able to take part in OTAs.
Linebacker Lorenzo Alexander suffered a stinger in last week's game against Cleveland
Rookie says his skills are greatly improved
Washington Redskins coach Mike Shanahan and defensive coordinator Jim Haslett counted themselves as fortunate to have landed inside linebacker Bryan Kehl.
Former Redskin was released by Kansas City Tuesday.
Williams could challenge Evan Royster for third-down duties.
Former UCLA kicker has never attempted a field goal in the NFL.
Lineman Chigbo Anunoby is added to the practice squad.
Washington Redskins general manager Bruce Allen spoke to former tight end Chris Cooley on Thursday, coach Mike Shanahan said Friday.