Frank Anthony Grillo is an American actor known for his roles in films such as Warrior 2011 The Grey 2012 End of Watch 2012 and Zero Dark Thirty 2012 He had his first leading role in The Purge Anarchy 2014 portraying Sergeant Leo Barnes he reprises this role in The Purge Election Year 2016 He also plays the Marvel supervillain Brock Rumlow Crossbones in the Marvel Cinematic Universe He has appeared as the character in Captain America The Winter Soldier 2014 Captain America Civil War 2016 and Avengers Endgame 2019 Grillo was born June 8 1965 in New York City as the oldest of three children and is of Italian heritage He graduated from New York University with a business degree and spent a year on Wall Street before being asked to do a Miller Genuine Draft beer commercial