Marine
Marines were highly-trained soldiers in the Royal Navy.
Before joining the Torchwood Institute, Charles Gaskell had served in the marines. (PROSE: The Baby Farmers)
During World War II, marines guarded the British Cabinet War Rooms. Winston Churchill ordered a pair of marines into the war rooms to deal with the Ironside duo, only to see them exterminated by the Ironsides, who revealed themselves as Daleks. (TV: Victory of the Daleks)
The Imperial Landsknechte, the military defenders of the Earth Empire, (PROSE: Original Sin) were also known as the Imperial Marines. (AUDIO: Original Sin)
Anglican Marines of the Church served aboard Demons Run up to the Battle of Demons Run. Among them, the Thin One and the Fat One identified as the "Thin Fat Gay Married Anglican Marines". (TV: A Good Man Goes to War)