IV Corps (American) [ of Fifth Army, 9 Apr 1945 ]
-  1st Armored Division (American)
-  1st Infantry Division, Brazilian Expeditionary Force
-  10th Mountain Infantry Division (American)
-  679th Tank Destroyer Battalion
-  701st Tank Destroyer Battalion
-  751st Tank Battalion
-  760th Tank Battalion
-  894th Tank Destroyer Battalion
-  IV Corps Artillery
   -  7th Army Group Royal Artillery
      -  178th Medium Regiment (5.5in)
      -  2nd Medium Regiment (4.5in)
      -  253rd Battery, 17th Medium Regiment (5.5in)
      -  8th Survey Regiment [-1bty,-1trp]
         -  26th Light Anti-Aircraft Regiment
         -  53rd Anti-Aircraft Operations Room
   -  424th Field Artillery Group
      -  633rd Field Artillery Battalion
      -  403rd Field Artillery Battalion
      -  328th Field Artillery Battalion
      -  910th Field Artillery Battalion
      -  C Battery, 360th Searchlight Battalion
-  II Corps Engineers
   -  1108th Engineer Combat Group
      -  235th Engineer Combat Battalion
      -  255th Engineer Combat Battalion
      -  337th Engineer Combat Battalion
      -  23rd Italian Engineer Combat Battalion
      -  1029th Engineer Treadway Bridge Company

IV Corps (American) [ of Fifth Army, 23 Apr 1945 ]
-  Headquarters and Headquarters Company
-  Brazilian Expeditionary Force
   -  1st Brazilian Infantry Division
   -  Graves Registration Platoon
   -  1st Medical Group
   -  2nd Medical Group
   -  3rd Medical Group
   -  107th AAA Group [att]
      -  Headquarters and Headquarters Battery
-  1st Armored Division (American)
-  10th Mountain Division (American)
-  34th Infantry Division (American)
-  85th Infantry Division (American)
-  365th Infantry Regiment, 92nd Infantry Division [att]
-  371st Infantry Regiment, 92nd Infantry Division [att]
-  91st Cavalry Reconnaissance Squadron
-  751st Tank Battalion
-  701st Tank Destroyer Battalion
-  894th Tank Destroyer Battalion [-1co]
-  A Company, 760th Tank Battalion
-  D Company, 760th Tank Battalion
-  Detachment, 	Flight B, 121st Liaison Squadron [att]
-  401st AAA Gun Battalion (Type C)
-  Battery C, 360th AAA Searchlight Battalion
   -  1439th Engineer Searchlight Maintenance Detachment [att]
-  84th Chemical Mortar Battalion
-  179th Chemical Smoke Generating Company [-1pltn]
-  Engineer Section, IV Corps
   -  1108th Engineer Combat Group
      -  Headquarters and Headquarters Company
      -  23rd Italian Engineer Combat Battalion [att]
   -  235th Engineer Combat Battalion
   -  255th Engineer Combat Battalion
   -  337th Engineer Combat Battalion
   -  401st Engineer Combat Battalion
   -  1029th Engineer Treadway Bridge Company
   -  3rd Platoon, 2916th Engineer Camouflage Company
   -  4th Platoon, 2916th Engineer Camouflage Company
-  Field Artillery, IV Corps
   -  IV Corps Artillery
      -  Headquarters and Headquarters Battery
      -  617th Field Artillery Observation Battalion
   -  424th Field Artillery Group
      -  Headquarters and Headquarters Battery
   -  633rd Field Artillery Battalion (155mm Gun)
   -  766th Field Artillery Battalion (155mm Howitzer)
   -  1125th Armored Field Artillery Battalion (105mm Howitzer Self-propelled)
   -  7 Army Group, Royal Artillery [att]
      -  Headquarters
      -  2 Medium Regiment (4.5-inch Gun)
      -  232 Battery, 17 Medium Regiment (5.5-inch Gun/Howitzer)
      -  8 Survey Regiment [-1btry]
      -  212 Battery, 111 Field Regiment (25-pounder)
      -  178 Medium Regiment (5.5-inch Gun/Howitzer)
      -  26 Light Anti-Aircraft Artillery Regiment [-1btry]
         -  53 Anti-Aircraft Operations Room [att]
-  48th Finance Disbursing Section
-  35th Infantry Scout Dog Platoon
-  37th Infantry Scout Dog Platoon
-  Medical Section, IV Corps
   -  163rd Medical Battalion
      -  Headquarters and Headquarters Detachment
      -  671st Medical Collecting Company
      -  672nd Medical Collecting Company
      -  673rd Medical Collecting Company
      -  615th Medical Clearing Company
   -  32nd Field Hospital
-  Military Police Platoon, IV Corps
-  C Company, 101st Military Police Battalion
-  148th Ordnance Bomb Disposal Squad
-  2nd Platoon, 22nd Quartermaster Car Company
-  2nd Platoon, 318th Italian Quartermaster Service Company [att]
-  62nd Signal Battalion
-  3916th Signal Service Company (Radio Intelligence) [att]
-  1st Italian Pack Mule Battalion [att]
   -  Headquarters and Headquarters Detachment
   -  5th Italian Pack Mule Company
   -  10th Italian Pack Mule Company
   -  17th Italian Pack Mule Company
-  4th Italian Pack Mule Battalion [att]
   -  Headquarters and Headquarters Detachment
   -  12th Italian Pack Mule Company
   -  18th Italian Pack Mule Company
   -  20th Italian Pack Mule Company
-  204th Counter Intelligence Corps Detachment [att]