United States Marine Corps Gunner Collar Device
Criteria: The Gunner Collar Device is worn on the collar of the Marine Corps uniform. The insignia is manufactured in the shape of a bursting bomb, similar to the emblem inside the rank chevron of a Master Gunnery Sergeant.
Marine Gunners, or Infantry Weapons Officers, are Chief Warrant Officers that are technical weapons specialists and are knowledgeable in the tactical employment of all weapons organic to the Marine infantry units. Their technical skills complemented with infantry field experience fundamentally posits them as advisers to the force commanders within the Fleet Marine Force's task forces. When assigned directly to a section of the general staff, Marine Gunners may be responsible for developing and monitoring weapons training protocols, its tactical employment of weapons, and preventive maintenance of the unit's infantry weapons. During combat operations, Marine Gunners assists their force commanders in battle tracking.