Trooper is a Canadian rock band that developed from a group formed by vocalist Ramon McGuire and guitarist Brian Smith in 1975.

Their current lineup features:
Ra McGuire on vocals;
Brian Smith on guitar;
Gogo on keyboard;
Scott Brown on guitar; and
Clayton Hill on drums.

The group is best known for its Canadian hits: “Raise a Little Hell”, “We’re Here for a Good Time (Not a Long Time)”, “The Boys in the Bright White Sports Car”, “General Hand Grenade”.

In 1967, Ramon McGuire and Brian Smith formed a band called Winter’s Green, which recorded two songs, “Are You a Monkey” and “Jump in the River Blues”, on the Rumble Records Label.

In the early 1970s, the band changed their name to Applejack and added drummer Tommy Stewart and bassist Harry Kalensky to their lineup.
Applejack became a very popular band in the Vancouver area, and began touring extensively in British Columbia.

After hearing Applejack perform in 1975, Randy Bachman of Bachman–Turner Overdrive and The Guess Who signed the band to his “Legend” label. The band then changed their name to Trooper, and Bachman produced the band’s self-titled debut album, Trooper, which contained the hits “Baby Woncha Please Come Home” and “General Hand Grenade”.

Trooper’s lineup has changed substantially since 1975, adding keyboardist Frank Ludwig before the release of the band’s second album, Two For the Show, then replacing bassist Harry Kalensky with Doni Underhill before Knock ‘Em Dead, Kid. Then, in 1980, Trooper disassociated themselves from Randy Bachmann and replaced Frank Ludwig with Rob Deans (though Ludwig would return as a guest in 1986 after Deans left the band). Drummer John Stoltz played with the band from 1990 to 1995, when Lance Chalmers took his place and played with the band for eight years.

The band reached their present lineup in the latter half of the 1990s after the release of their 1991 studio album Ten as Gogo replaced Blaine Smith, becoming Trooper’s keyboardist, and bassist Scott Brown joined the band.