The Department of Defense is sending troops south to counter two migrant caravans that are moving on foot through Mexico toward the U.S. border.

The number of troops headed to the border keeps rising, with 5,600 already deployed and a total of 7,000 expected eventually to support U.S. Customs and Border Protection, U.S. Northern Command officials said Thursday.

So far, 2,800 troops are deployed in Texas, 1,300 in California — including 1,100 Marines from Camp Pendleton — and 1,500 are deployed in Arizona.

No troops so far have been deployed to New Mexico, although DoD initially indicated they would be.

The Pentagon also has no estimate available on how much the operation will cost, said spokesman Army Lt. Col. Jamie Davis. Reporters and lawmakers have pressed officials in the building for weeks now on how much the rapid deployment of thousands of troops would cost.

On Wednesday, DoD confirmed it had stopped calling the mission “Operation Faithful Patriot.”

Here are the units under orders to the border, as released by NORTHCOM:

From Fort Bliss, Texas

  • Headquarters & Headquarters Detachment, 93rd Military Police Battalion
  • 24th Press Camp Headquarters, 1st Armored Division 
  • 47th Heavy Composite Truck Company 
  • 202nd Military Police Company, 93rd Military Police Battalion 
  • 212th Military Police Company, 93rd Military Police Battalion 
  • 591st Military Police Company, 93rd Military Police Battalion 
  • Contingency Contracting Teams 
  • Contracting Support Brigade Commander

From Fort Bragg, North Carolina

  • 2nd Assault Helicopter Battalion, 82nd Airborne Division 
  • 51st Medical Logistics Company 
  • 503rd Military Police Battalion (Airborne)
  • 172nd Preventive Medicine Unit 
  • 264th Combat Sustainment Support Battalion 
  • 329th Movement Control Team 
  • 403rd Inland Cargo Transfer Company 
  • Headquarters & Headquarters Command, 3rd Expeditionary Sustainment Command 
  • Headquarters & Headquarters Company, 16th Military Police Brigade 
  • Headquarters & Headquarters Detachment, 503rd Military Police Battalion 
  • 248th Veterinary Service Support unit o 690th Medical Company (Ground Ambulance)

From Fort Campbell, Kentucky

  • 74th Light Composite Transportation Company 
  • 372nd Inland Cargo Transfer Company, 129th Combat Sustainment Support Battalion, 101st Airborne Division Sustainment Brigade
  • 227th Quartermaster Composite Supply Company
  • 632nd Movement Control Team
  • 887th Engineer Support Company, 101st Airborne Division Sustainment Brigade

From Fort Carson, Colorado

  • Headquarters & Headquarters Company, 4th Sustainment Brigade, 4th Infantry Division
  • Headquarters & Headquarters Company, 68th Combat Sustainment Support Battalion, 4th Sustainment Brigade, 4th Infantry Division

From Fort Detrick, Maryland

  • 6th Medical Logistics Management Center

From Fort Hood, Texas

  • 89th Military Police Brigade, III Corps 
  • Headquarters, 62nd Engineer Battalion 
  • 937th Engineer Sapper Company, 8th Engineer Battalion, 36th Engineer Brigade 
  • 289th Quartermaster Company, 553rd Combat Sustainment Support Battalion, 1st Cavalry Division Sustainment Brigade 
  • 104th Engineer Company

From Fort Knox, Kentucky

  • Headquarters & Headquarters Detachment, 19th Engineer Battalion, 20th Engineer Brigade 
  • 15th Engineer Company (Horizontal), 19th Engineer Battalion 
  • 541st Engineer Sapper Company, 19th Engineer Battalion

From Fort Meade, Maryland

  • 55th Signal Company (Combat Camera)

From Fort Riley, Kansas

  • Headquarters and Headquarters Detachment, 97th Military Police Battalion, 1st Infantry Division
  • 977th Military Police Company Combat Support 
  • 287th Military Police Company Combat Support 
  • 41st Engineer Company (Clearance), 4th Engineer Battalion, 36th Engineer Brigade

From Fort Stewart and Hunter Army Airfield, Georgia

  • 3rd Combat Aviation Brigade Headquarters, 3rd Infantry Division 
  • 90th Human Resources Company, 3rd Special Troops Battalion, 3rd Sustainment Brigade

From Joint Base Charleston, South Carolina

  • 1st Combat Camera Squadron

From Joint Base Lewis-McChord, Washington

  • Headquarters, 864th Engineer Battalion 
  • 5th Mobile Public Affairs Detachment, I Corps '
  • 66th Military Police Company, 504th Military Police Battalion 
  • 547th Area Support Medical Company 
  • 104th Engineer Construction Company 
  • 557th Engineer Construction Company 
  • 570th Engineer Sapper Company
  • 571st Engineer Sapper Company

From U.S. Transportation Command

  • U.S. Transportation Command, strategic airlift using C-17s and C-130s

From Joint Base San Antonio, Texas

  • Headquarters U.S. Army North 
  • 4th Expeditionary Sustainment Command Assessment Team 
  • Headquarters and Headquarters Company, 505th Military Intelligence Brigade

From Marine Corps Base Camp Pendleton

  • Special-Purpose Marine Air-Ground Task Force 7, I Marine Expeditionary Force

From Naval Station Norfolk, Virginia

  • Joint Planning Support Element, Joint Enabling Capabilities Command

From Peterson Air Force, Colorado

  • Joint Enabling Capability Team and Aviation Planner from U.S. Northern Command

Tara Copp is a Pentagon correspondent for the Associated Press. She was previously Pentagon bureau chief for Sightline Media Group.

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