Finally , in 1983 , at a ceremony in Grangemouth , the Scottish 300 Troop was re-roled as a Royal Marines Reserve Assault Engineer Troop .
Plymouth took on the 300 Troop title .
Finally , in 1983 , at a ceremony in Grangemouth , the Scottish 300 Troop was re-roled as a Royal Marines Reserve Assault Engineer Troop , and Plymouth took on the 300 Troop title .