Here's an order of battle that also shows the 757th.
http://www.milhist.net/ordbat/2corpsus.html
Order of Battle • II Corps (American)
II Corps (American) [ of Fifth Army, 11 Jan 1943 ]
- Hq and Hq Company, II Corps
- 1st Infantry Division (American)
- 1st Armored Division (American)
- 1st Ranger Battalion
- 601st Tank Destroyer Battalion
- 202nd Military Police Company
- 209th Coast Artillery Regiment (Anti-Aircraft)
- 431st Coast Artillery Battalion (Anti-Aircraft) (Automatic Weapons)
- 432nd Coast Artillery Battalion (Anti-Aircraft) (Automatic Weapons)
- 19th Engineer Regiment (Combat)
- 62nd Engineer Company (Topographic) [u/c MedBaseSect]
- 13th Field Artillery Brigade
- Hq and Hq Battery, 13th Field Artillery Brigade
- 1st Observation Battalion
- 17th Field Artillery Regiment
- 36th Field Artillery Regiment
- 178th Field Artillery Regiment
- 51st Medical Battalion
- Hq and Hq Detachment, Provisional Ordnance Regiment (Field)
- 42nd Ordnance Battalion (M & S)
- Hq and Hq Detachment
- 78th Ordnance Company (Depot)
- 14th Ordnance Company (Medium Maintenance)
- 9th Ordnance Company (Medium Maintenance)
- 87th Ordnance Battalion (Medium Maintenance) (Q)
- Hq and Hq Detachment
- 3485th Ordnance Company (Medium Maintenance) (Q)
- 3486th Ordnance Company (Medium Maintenance) (Q)
- 30th Ordnance Company (Medium Maintenance) (Tank)
- A Company, 205th Quartermaster Battalion (Gas Supply)
- D Company, 244th Quartermaster Battalion (Service)
- 1st Engineer Amphibian Regiment [u/c MedBaseSect]
- 53rd Signal Battalion
II Corps (American) [ of Fifth Army, 9 Apr 1945 ]
- 6th South African Armoured Division
- 34th Infantry Division (American)
- 88th Infantry Division (American)
- 91st Infantry Division (American)
- Legnano Combat Group (Italian)
- 91st Cavalry Reconnaissance Squadron
- 752nd Tank Battalion
- 757th Tank Battalion
- 804th Tank Destroyer Battalion
- 805th Tank Destroyer Battalion
- II Corps Artillery
- 15th Observation Battalion
- 178th Field Artillery Group
- 248th Field Artillery Battalion
- 527th Field Artillery Battalion
- 765th Field Artillery Battalion
- 12th Battery, 54th [brit] Super Heavy Regiment
- A Battery, 530th Field Artillery Battalion
- 77th Field Artillery Group
- 173rd Field Artillery Battalion
- 631st Field Artillery Battalion
- 936th Field Artillery Battalion
- 423rd Field Artillery Group
- 178th Field Artillery Battalion
- 536th Field Artillery Battalion
- 985th Field Artillery Battalion
- 11th Battery, 54th [brit] Super Heavy Regiment
- 71st Anti-Aircraft Brigade
- 209th Anti-Aircraft Group
- 401st Gun Battalion
- 403rd Gun Battalion
- 105th Automatic Weapons Battalion (Self-Propelled)
- 432nd Automatic Weapons Battalion (Self-Propelled)
- B Battery, 360th Searchlight Battalion
- II Corps Engineers
- 19th Engineer Combat Group
- 401st Engineer Combat Battalion
- 402nd Engineer Combat Battalion
- 39th Engineer Combat Group
- 404th Engineer Combat Battalion
- 643rd Engineer Combat Battalion
- 1755th Engineer Treadway Bridge Company
II Corps (American) [ of Fifth Army, 23 Apr 1945 ]
- Headquarters and Headquarters Company
- 6th South African Armoured Division
- 88th Infantry Division (American)
- 91st Infantry Division (American)
- 752nd Tank Battalion
- 757th Tank Battalion
- 804th Tank Destroyer Battalion (Self-propelled)
- 805th Tank Destroyer Battalion (Self-propelled)
- Flight B, 121st Liaison Squadron [-1det] [att]
- 209th AAA Group
- Headquarters and Headquarters Detachment
- 71st AAA Operation Detachment
- 105th AAA Automatic Weapons Battalion (Self-propelled)
- 432nd AAA Automatic Weapons Battalion (Self-propelled)
- 403rd AAA Gun Battalion (Type C)
- Battery B, 360th AAA Searchlight Battalion
- 1438th Engineer Searchlight Maintenance Detachment [att]
- 100th Chemical Mortar Battalion
- 172nd Chemical Smoke Generating Company
- Engineer Section, II Corps
- 19th Engineer Combat Group
- Headquarters and Headquarters Company
- 39th Engineer Combat Group
- Headquarters and Headquarters Company
- 402nd Engineer Combat Battalion
- 404th Engineer Combat Battalion
- 643rd Engineer Combat Battalion
- 1755th Engineer Treadway Bridge Company
- Field Artillery Section, II Corps
- II Corps Artillery
- Headquarters and Headquarters Battery
- 15th Field Artillery Observation Battalion
- 77th Field Artillery Group
- Headquarters and Headquarters Battery
- 178th Field Artillery Group
- Headquarters and Headquarters Battery
- 423rd Field Artillery Group
- Headquarters and Headquarters Battery
- 173rd Field Artillery Battalion (155mm Gun)
- 985th Field Artillery Battalion (155mm Gun)
- 178th Field Artillery Battalion (155mm Howitzer)
- 248th Field Artillery Battalion (155mm Howitzer)
- 631st Field Artillery Battalion (155mm Howitzer)
- 765th Field Artillery Battalion (155mm Howitzer)
- 936th Field Artillery Battalion (155mm Howitzer)
- 527th Field Artillery Battalion (8-inch Howitzer)
- 536th Field Artillery Battalion (8-inch Howitzer)
- A Battery, 530th Field Artillery Battalion (155mm Gun)
- 11th Battery, 54th (British) Super Heavy Regiment, Royal Artillery (8-inch Gun) [att]
- 12th Battery, 54th (British) Super Heavy Regiment, Royal Artillery (8-inch Gun) [att]
- Medical Section, II Corps
- 54th Medical Battalion
- Headquarters and Headquarters Detachment
- 379th Medical Collecting Company
- 380th Medical Collecting Company
- 381st Medical Collecting Company
- 683rd Medical Clearing Company
- 33rd Field Hospital
- Military Police Platoon, II Corps
- 202nd Military Police Company
- 151st Ordnance Bomb Disposal Squad
- 1st Platoon, 523rd Quartermaster Car Company
- 3rd Platoon, 523rd Quartermaster Car Company
- 1st Platoon, 318th Italian Quartermaster Service Company [att]
- 53rd Signal Battalion
- 3133rd Signal Service Company
- 3915th Signal Service Company (Radio Intelligence [att]
- 3422nd Quartermaster Truck Company
- 2nd Italian Pack Mule Battalion [att]
- 2nd Italian Pack Mule Company
- 13th Italian Pack Mule Company
- 21st Italian Pack Mule Company
- 3rd Italian Pack Mule Battalion [att]
- 1st Italian Pack Mule Company
- 9th Italian Pack Mule Company
- 16th Italian Pack Mule Company
- 5th Italian Pack Mule Battalion [att]
- 11th Italian Pack Mule Company
- 15th Italian Pack Mule Company
- 19th Italian Pack Mule Company
- 30th Finance Disbursing Section [att]
202nd Counter Intelligence Corps Detachment
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"