3rd Battalion, 4th Marines (3/4) is an infantry battalion of the United States Marine Corps

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

. Nicknamed "Thundering Third" it is known within the battalion as "Darkside" and the radio callsigns of the command and staff reflect this moniker. They are based at the Marine Corps Air Ground Combat Center Twentynine Palms

Marine Corps Air Ground Combat Center Twentynine Palms

The Marine Corps Air Ground Combat Center , also known as 29 Palms, is a United States Marine Corps base. It was a census-designated place officially known as Twentynine Palms Base located adjacent to the city of Twentynine Palms in southern San Bernardino County, California. As of the 2000...

 and consist of approximately 1,000 Marines. They fall under the command of the 7th Marine Regiment and the 1st Marine Division.

• Headquarters and Service Company
• Company I (India Company)
• Company K (Kilo Company)
• Company L (Lima Company)
• Company M (not currently in use, can be stood up in times when larger battalions are necessary)
• Weapons Company

Activated on May 1, 1941 at Cavite

Cavite

Cavite is a province of the Philippines located on the southern shores of Manila Bay in the CALABARZON region in Luzon, just 30 kilometers south of Manila. Cavite is surrounded by Laguna to the east, Metro Manila to the northeast, and Batangas to the south...

, Philippine Islands as First Separate Marine Battalion, Navy Yard, Cavite.