Insignia
Detachment One's Insignia comes from the World War II Marine Raider's patch, a blue patch with a skull and stars. The insignia was created by Warrant Officer (then-GySgt) Anthony Siciliano. The scarlet, blue, and gold disk represents the unit's joint Navy-Marine Corps origins. The crossed stiletto/lightning bolt represent the unit's special operations mission, and its global communications reach. The parachute wings represent airborne-qualified status and the mask above it represents the combatant diver qualification.
Read more about this topic: MCSOCOM Detachment One