Frosthawks

The Frosthawks were a rebel group. They were active within the Partisans, until the leader Saw Gerrera purged them from the Partisans sometime prior to the Battle of Scarif in 0 BBY.

They were mentioned in a report to Rebel Alliance leader Mon Mothma, later archived in The Rebel Files.

Behind the scenes
The Frosthawks are mentioned in the 2017 in-universe reference book Star Wars: The Rebel Files, written by Daniel Wallace.