There are at least 5 bands named "Ambush"  Ambush the latest efforts from some of the uk toughest hardcore band, they play brutal metal influenced hardcore with lots of breaks and even some rap beats in there songs  Ambush is a Norwegian house music duo.  Traditional Heavy Metal from Sweden (Köping)
Released a EP in 1984 called 4-Track EP.  German now defunct hardcore band from Berlin, released at least three albums, three ep's and one demo. They started as hardcore band with agresive style of music with a little touch of sludge core.