betleH 'etlh

• 23rd century operation of Imperial Intelligence devoted to surgical alteration and modification of Klingon agents for infiltration into Federation outposts (TOS Novel: Errand of Vengeance: The Edge of the Sword)
• Translates as "The Blade of the Bat'leth" (TOS Novel: Errand of Vengeance: The Edge of the Sword)
• Members known as Infiltrators (TOS Novel: Errand of Vengeance: The Edge of the Sword)

Known Members

• "NFN Hatcher"
• Kell
• Krek
• Lurqal
• "Ethan Mathews"