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WWII On This Day: July 24

What happened on July 24 during World War II? This date brings together 4 events from 1943 and 1944, with period photographs and links to the full operations documented across WW2 Theatres.

1943
Incendiaries burn in Hamburg during the opening Operation Gomorrah raid on the night of 24–25 July 1943.
Incendiaries burn in Hamburg during the opening Operation Gomorrah raid on the night of 24–25 July 1943. Royal Air Force official photographer / Imperial War Museums, C 3677 · Public domain (UK Government) Source
The Combined Bomber Offensive

Operation Gomorrah begins

A force of 791 aircraft attacked Hamburg while Window saturated the German radar displays. Twelve bombers were lost, far below recent loss rates over heavily defended German targets. German controllers could see large numbers of false echoes and could not employ the existing radar-box system effectively.

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Annotated RAF aerial photograph taken during the opening Hamburg raid of 24–25 July 1943.
Annotated RAF aerial photograph taken during the opening Hamburg raid of 24–25 July 1943. Royal Air Force official photographer / Imperial War Museums C 3677 · Public domain Source
The Bombing of Cities

Operation Gomorrah opens and Window disrupts the defences

RAF Bomber Command opened Operation Gomorrah against Hamburg on the night of 24–25 July. The city was a major port, shipbuilding centre and industrial target, and it also contained dense working-class districts within the area-bombing system. For the first time on this scale, RAF aircraft dropped strips of metallised foil known as Window to flood German radar displays with false echoes. The measure disrupted radar-directed fighter and gun control and reduced the effectiveness of a defensive system that had imposed heavy losses on earlier night raids. The opening attack caused…

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1944
American armour moving through the ruins of Saint-Lô during the breakout, July 1944.
American armour in the ruins of Saint-Lô, July 1944 · US Army Signal Corps · NARA · Public domain · Source
Operation Cobra

The first attempt, recalled

Cloud over the target led to a recall, but the message reached the formations late and part of the force bombed anyway. Some released short, into the American positions north of the road. Twenty-five American soldiers were killed and about 130 wounded. The infantry had also pulled back from the road to give a safety margin, and the Germans, seeing them go, moved forward into the ground they had vacated.

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OSS officers with Draža Mihailović at Pranjani on 6 September 1944 during Operation Halyard.
Unknown photographer · Pranjani, 6 September 1944 · Public domain (PD-Yugoslavia)
Operation Halyard

The Fifteenth Air Force creates an Air Crew Rescue Unit

Bomber losses over the Balkans had made aircrew recovery an operational problem. General Ira Eaker directed the Fifteenth Air Force to establish an Air Crew Rescue Unit responsible for locating and evacuating Allied airmen across the region. Colonel George Kraigher formed two parties. One would work with Tito's Partisans; the other would operate with Draža Mihailović's Chetniks. Structuring the organization as rescue rather than political liaison helped overcome British objections to renewed American contact with Mihailović.

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