1) Collaborationist 2) Collaborator 3) Fifth columnist 4) Norwegian fascist 5) Traitor 6) Treasonist 7) Vidkun of Norway 1) Collaborationist 2) Deserter 
A quisling (ŋ; ˈkʋɪsˈlɪŋ) is a person who collaborates with an enemy occupying force. The word originates from the Norwegian war-time leader Vidkun Quisling who was the head of a domestic Nazi collaborationist regime during the Second World War. ==Origin== The term quisling is said to have been coined by the British newspaper The Times in a...
one who aids the enemy; a puppet leader supported by foreign power
Quisling is slang for a traitor.
a person who betrays his or her own country by aiding an invading enemy, often serving later in a puppet government; fifth columnist.
[SAT terms] someone who collaborates with an enemy occupying force