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Duty, honor... courage... Semper Fi........Frank Horrigan

The United States Marine Corps was one of five branches of the United States Armed Forces. Closely cooperating with the United States Navy for mobility, the Marine Corps acted as the United States force in readiness.


In the 21st century during the Sino-American War, the Marine Corps would spearhead assaults into the Chinese mainland in 2074. Despite claims of fighting a defensive war, American infantry and mechanized divisions landed in Asia, in a counter-invasion of Chinese mainland. In the Yangtze Campaign, U.S. Marines rapidly overran Shanghai and Nanjing, securing a major port for bringing in troops and materiel.[1][2]

On the domestic front, the Marine Corps would be responsible for protecting Navy facilities, especially black sites such as Sugar Grove in Appalachia,[3] the Mount Desert Island Naval Facility at Mount Desert Island,[4] and the Turtledove Detention Camp in Point Lookout. The Marines were also responsible for rounding up civilians for internment in accordance with Executive Order 99066, but due to a shortage of manpower, the USMC would hand these contracts to private military contractors.[5] The Marines also participated in war games with other military assets, such as United States Army Rangers.[6]

Although the United States of America and all of its military branches ceased to exist during the Great War, elements of the Marine Corps seem to have survived in the Enclave, of all places, where the values integral to the Corps were instilled into its servicemen. Frank Horrigan is an example of such.[7]

United States Marine Corps Force ReconnaissanceEdit

Force Reconnaissance (FORECON) serves as both the recon element of the Marine Corps and its special operations capable force. It frequently operated behind enemies lines, scouting out enemy positions in green operations as well as carrying out independent black operations against enemy positions.[8]

Prior to the Great War, Hank Madigan was a sergeant in Force Reconnaissance.[citation needed]


The United States Marine Corps used many of the same weapons as the United States Army,[9] but would use a number of tools unique to the branch, including the riot gear customized for desert operations and Wattz 2000 laser rifles for its sharpshooters.[10] Marine Corp detachments embedded with Navy warships and posted to Navy facilities also used heavy suits of combat armor and specialized infiltration gear in their operations.[11]


  1. Future Weapons Today mentions a Marine's memoirs as a sniper in that area. Both cities are also one of the easternmost points in China and a natural choice for amphibious landings and setting up a bridgehead for bringing in reinforcements.
  2. Desert Ranger combat armor
  3. Sugar Grove terminal entries; SigInt system terminal, 8-19-77: External Contractors
  4. DiMA's memory; DiMA's memory #5
  5. Internment orders
  6. War game orders
  7. Frank Horrigan quotes two of three core values of the USMC, together with the motto (Semper Fidelis) in his dying words.
  8. United States Marine Corps Force Reconnaissance on Wikipedia
  9. Benjamin Montgomery uses the same gear as Army service members.
  10. Future Weapons Today
  11. Both suits of armor, as they appear in Far Harbor and Fallout 76.
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