The Ghost Army was a United States Army tactical deception unit during World War II officially known as the 23rd Headquarters Special Troops. The 1100 man unit was given a unique mission within the Allied Army: to impersonate other Allied Army units to deceive the enemy. From a few months after D-Day, when they landed in France, until the end of the war, they put on a “traveling road show” utilizing inflatable tanks, sound trucks, fake radio transmissions, scripts and pretence. They staged more than 20 battlefield deceptions, often operating very close to the front lines. Their story was kept secret for more than 40 years after the war, and elements of it remain classified. The unit was the subject of a PBS documentary The Ghost Army in 2013.

Aided by engineers from Bell Labs, a team from the 3132 went to Fort Knox to record sounds of armored and infantry units onto a series of sound effects records that they brought to Europe. For each deception, sounds could be “mixed” to match the scenario they wanted the enemy to believe. This program was recorded on state-of-the-art wire recorders (the predecessor to the tape recorder), and then played back with powerful amplifiers and speakers mounted on halftracks. The sounds they played could be heard 15 miles (24 km) away.

To complement existing techniques, the unit often employed theatrical effects to supplement the other deceptions. Collectively called “atmosphere”, these included simulating actual units deployed elsewhere by the application of their divisional insignia, painting appropriate unit insignia on vehicles and having the individual companies deployed as if they were regimental headquarters units. Trucks/Lorries would be driven in looping convoys with just two troops in the seats near the rear, to simulate a truck full of motorized infantry under the canvas cover. “MPs” (military police) would be deployed at cross roads wearing appropriate divisional insignia and some officers would simulate divisional generals and staff officers visiting towns where enemy agents were likely to see them. A few actual tanks and artillery pieces were occasionally assigned to the unit to make the “dummies” in the distance appear more realistic.

Activated as a B-26 Marauder medium bombardment squadron in mid-1943. Trained under Third Air Force and deployed to European Theater of Operations in March 1944. Initially being stationed in England and assigned to IX Bomber Command.

Engaged in tactical bombardment of enemy targets in Occupied Europe initially from stations in England, then after D-Day, moved to Advanced Landing Grounds in France and Belgium; advancing eastward as Allied ground forces advanced. Supported Eighth Air Force strategic bombardment missions over Nazi Germany and Occupied Europe; striking enemy airfields to obtain maximum interference in Luftwaffe day interceptor attacks on heavy bomber formations returning to England. Also participated in Western Allied Invasion of Germany, March–April 1945, combat ending with German Capitation in May 1945.

Became part of the United States Air Forces in Europe performing occupation duty in Germany while squadron demobilized personnel in 1945. Squadron reassigned to the United States as a paper unit, inactivated in February 1946.

The 502nd Infantry Regiment (502nd IR), previously titled the 502nd Parachute Infantry Regiment (502nd PIR), is an airborne infantry regiment of the United States Army. The regiment was established shortly after the American entry into World War II, and was assigned as a regiment of the 101st Airborne Division, “The Screaming Eagles”, one of the most decorated formations of the U.S. Army. The regiment saw substantial action in the European Theater of World War II and was deactivated in 1945, shortly after the end of the war. Reactivating in a new form in 1956, the 502nd Infantry has served in the Vietnam War, the first Gulf War, Operation Iraqi Freedom, Operation Enduring Freedom in Afghanistan, and Operation Inherent Resolve in Iraq. since 1974, the regiment has been classified as an Air Assault unit. Currently, its 1st and 2nd battalions are active. Both battalions are assigned to the 2nd Brigade Combat Team, 101st Airborne Division (Air Assault).

VP-33 was a Patrol Squadron of the U.S. Navy. The squadron was established as Patrol Squadron 12-F (VP-12F) on 1 November 1935, redesignated Patrol Squadron 12 (VP-12) on 1 October 1937, redesignated Patrol Squadron 51 (VP-51) on 1 July 1939, redesignated Patrol Squadron 71 (VP-71) on 1 July 1941, redesignated Patrol Bombing Squadron 71 (VPB-71) on 1 October 1944, redesignated Patrol Squadron 71 (VP-71) on 15 May 1946, redesignated Amphibian Patrol Squadron 3 (VP-AM-3) on 15 November 1946, redesignated Patrol Squadron 33 (VP-33) on 1 September 1948 and disestablished on 15 December 1949. It was the third squadron to be designated VP-33; the first had been redesignatd from VP-5 on 1 July 1939 and was in turn redesignated as VP-32 on 1 October 1941. The second VP-33 was redesignated VPB-33 on 1 October 1944.

They earned the nickname Black Cats after  the events of 24 November 1944: where VPB-71 deployed to Manus Island, reporting to Commander, Air Seventh Fleet for duty on 13 November. A detachment of two aircraft was loaned to the 2d Emergency Rescue Squadron of the 13th Army Air Force. On the 24th, VPB-71 commenced Black Cat operations in the vicinity of Morotai. Black Cat operations were flown by U.S. Navy Catalina squadrons against Japanese shipping and shore installations at night. Although originally a tactic designed to afford some measure of protection for the highly vulnerable, slow moving seaplanes, Black Cat operations proved so successful that several squadrons were assigned the role. Flat black painted surfaces and the use of radar made the outdated aircraft into a formidable night attacker.

VPB-15 was a Patrol Bombing Squadron of the U.S. Navy. The squadron was established as Patrol Squadron 15 (VP-15) on 15 March 1943, redesignated Patrol Bombing Squadron 15 (VPB-15) on 1 October 1944 and disestablished on 23 November 1945.

The 3rd Armored Division (“Spearhead”) was an armored division of the United States Army. Unofficially nicknamed the “Third Herd,” the division was first activated in 1941, and was active in the European Theater of World War II. The division was stationed in West Germany for much of the Cold War, and participated in the Persian Gulf War. On 17 January 1992, in Germany, the division ceased operations. In October 1992 it was formally inactivated as part of a general drawing down of forces at the end of the Cold War.

The 3rd Armored Division was organized as a “heavy” armored division, as was its counterpart, the 2nd Armored Division (“Hell on Wheels”). Later, higher-numbered U.S. armored divisions of World War II were smaller, with a higher ratio of armored infantry to tanks, based on lessons of the fighting in North Africa.

As a “heavy” division, the 3rd Armored possessed two armored regiments totaling four medium tank battalions and two of light tanks (18 companies) instead of three tank battalions containing both (12 companies), 232 medium tanks instead of the 168 allotted a light armored division, and with attached units numbered over 16,000 men, instead of the normal 12,000 found in the light armored divisions. Each division type had an infantry component of three mechanized infantry battalions.

The division’s core units were the 36th Armored Infantry Regiment, the 32d Armored Regiment, the 33d Armored Regiment, the 23d Armored Engineer Battalion, the 83d Armored Reconnaissance Battalion, and the 143d Armored Signal Company. During World War II these were organized operationally into task forces known as combat commands A, B and R (Reserve).

The first elements of the 3rd Armored in France saw combat on 29 June, with the division as a whole beginning combat operations on 9 July 1944. During this time, it was under the command of VII Corps and XVIII Airborne Corps for some time, and assigned to the First Army and the 12th Army Group for the duration of its career.

The division “spearheaded” the US First Army through Normandy, taking part in a number of engagements, notably including the Battle of Saint-Lô, where it suffered significant casualties. After facing heavy fighting in the hedgerows, and developing methods to overcome the vast thickets of brush and earth that constrained its mobility, the unit broke out at Marigny, alongside the 1st Infantry Division, and swung south to Mayenne. The engineers and maintenance crews took the large I-Beam Invasion barriers from the beaches at Normandy and used the beams to weld large crossing rams on the front of the Sherman tanks. They would then hit the hedgerows at high speed, bursting through them without exposing the vulnerable underbellies of the tanks. Until this happened, they could not get across the hedgerows.

On 10 September 1944, the Spearhead Division fired what it claimed was the first American field artillery shell of the war onto German soil. Two days later, it passed the German border and soon breached the Siegfried Line, taking part in the Battle of Hurtgen Forest.

The 3d Armored Division continued fighting during the Battle of the Bulge, far north of the deepest German penetration. The division fought south in an attack designed to help wipe out the bulge and bring First Army’s line abreast of Patton’s Third Army fighting northward toward Houffalize. It severed a vital highway leading to St. Vith and later reached Lierneux, Belgium, where it halted to refit.

On 11 April 1945, the 3d Armored discovered the Dora-Mittelbau concentration camp. The division first arrived on the scene, reporting back to headquarters that it had uncovered a large concentration camp near the town of Nordhausen. Requesting help from the 104th Infantry Division, the 3d immediately began transporting some 250 ill and starving prisoners to nearby hospital facilities.

The last major fighting in the war for the division was the Battle of Dessau, which the division captured on 23 April 1945 after three days of combat. Following the action at Dessau, the division moved into corps reserve at Sangerhausen. Occupational duty near Langen was given the division following V-E Day, a role it filled until inactivation on 10 November 1945.