Special forces units and the navy of this country sought to take Lake Commachio by crossing Reno River as part of  Operation Roast.
Special forces units and the navy of this country sought to take Lake Commachio by crossing Reno River as part of  Operation Roast. In the 1980s, this country's special forces carried out Operation Flavius, which stopped an ASU car  bomb from attacking a parade. This country's special forces participated in the Clonoe Ambush, in which members of a  provisional army were ambushed and brutally murdered in a graveyard. Recently, Special Forces from this country tried  to rescue a pair of engineers from the fundamentalist Boko Haram in (*) Nigeria. Counter-terrorism in this country is  provided by the Government Communications Headquarters, which, during World War II, featured a cryptographic unit called  Room 40 and machines called Colossus. For 10 points, name this country whose special forces operated Bletchley Park and  fought against Argentina during the Falklands War.
Special forces units and the navy of this country sought to take Lake Commachio by crossing Reno River as part of  Operation Roast.
Great Britain [or United Kingdom; or UK; accept British special forces; prompt on English or England]