First Army
Commands the US First Army during Operation Overlord
D-Day and Normandy ยท permanent subject timeline
Commander of the U.S. First Army in the initial Normandy campaign. This page combines historical context with 35 matching records drawn directly from the World History Database Normandy archive.
Historical context
Omar Bradley commanded the U.S. First Army during the landings and early campaign. His forces fought through the Cotentin and bocage before launching Operation Cobra.
Bradley's command linked the D-Day assault to the capture of Cherbourg and the eventual American breakout. He later commanded the U.S. 12th Army Group as Allied forces expanded across France.
World History Database records
The records below are selected from the 455-record D-Day and Normandy archive and rendered as static HTML in chronological order.
First Army
Commands the US First Army during Operation Overlord
Operation Overlord
Commands the US First Army during Operation Overlord
Operation Overlord
The HQ for the 1st US Army opens in England
Operation Overlord
Arrives in England to take command of the First Army
Operation Overlord
3 Airbourne Divisions land behind enemy lines at St Mere-Eglise & Caen
Operation Overlord
Lands the 2nd British Army from the river Orme to St-Vaast-La-Hogue
Operation Overlord
The US Army succesfully captrures Omah & Utah beaches
Operation Cobra
Omar Bradleys intention was to take advantage of the German preoccupation with British and Canadian activity around the town of Caen, and punch through the German defenses penning in his troops while his opponent was distracted and unbalanced
Operation Overlord
Commands paratroopers who land on the eastern side of the Cotentin Peninsular only
Operation Overlord
The US 5th Corps capture Isigny on the way to uniting the Utah & Omaha
Capture of Barneville
The Cotentin Peninsular is sealed isolating 4 German Divisions & the port of Cherbourg. The Americans capture Barneville
Capture of St Lo
An attack of St Lo is launched but is slowed down by the Normandy countryside, bocage
Capture of Cherbourg
The US forces arrive at the hills overlooking Cherbourg
Capture of Cherbourg
The US Army captures the Fort du Roule, the key to the defences of Cherbourg
Capture of Cherbourg
Cherbourg falls to the Allies
Operation Cobra
To gain good terrain for Operation Cobra, Bradley and Collins conceived a plan to push forward to the Saint-Lโ-Periers road, along which VII and VIII Corps were securing jumping-off positions. The American 29th and 35th Infantry Divisions managed to gain the vital heights of Saint-Lo, driving back General der Fallschirmtruppen Eugen Meindls II Parachute Corps
Operation Cobra
Forced to postpone Operation Cobra due to heavy rainfall
Operation Cobra
Operation Cobra is postponed for a 2nd time
Operation Cobra
Gives the go ahead for Operation Cobra
Operation Cobra
After the one-day postponement, Cobra got underway at 09:38 on 25 July, when around 600 Allied fighter-bombers attacked strongpoints and enemy artillery along a 300 yd (270 m)-wide strip of ground located in the St. Lo area
Operation Cobra
2,500 bombers from the Eighth & 9th Air Forces open a gap west of St Lo
Operation Cobra
Pushes Patton through a gap in the German defence toward Avranches
Operation Cobra
By 28 July, the German defenses across the US front had largely collapsed under the full weight of VII and VIII Corps advance, and resistance was disorganised and patchy
Operation Overlord
Orders Patton to clear Brittany with a "minimum forces"
Operation Cobra
Authorizes Patton to outflank the Germans at Caen
Operation Cobra
Authorizes Patton to turn into the Orleans gap toward the Seine & Paris
Commonwealth
The town of Falaise becomes a major objective of Commonwealth forces, since its capture would cut off virtually all of Generalfeldmarschall Gunther von Kluges Army Group B
Operation Lutch
Operation Luttich had been defeated by concerted, large-scale fighter-bomber air strikes against the German Panzers and trucks & in the process, forces of the German 7th Army became further enveloped by the Allied advance out of Normandy
Operation Lutch
The town of Falaise becomes a major objective of Commonwealth forces, since its capture would cut off virtually all of Generalfeldmarschall Gunther von Kluges Army Group B
Operation Totalize
Orders Patton to Le Mans & the British to Falaise. Launched by Bradley to totally defeat the Germans in Normandy
Operation Cobra
Troops of the newly activated 3rd United States Army captured the city of Le Mans, formerly the German 7th Armys headquarters
Operation Overlord
Orders Patton to create a "short hook" from Le Mans to Falaise to trap the Germans
Operation Totalize
Poles & Americans seal the Falaise pocket officially ending the Normandy Campaign
Pocket-Falaise
Poles & Americans seal the Falaise pocket officially ending the Normandy Campaign
Operation Cobra
Operation Cobra, together with concurrent offensives by the Second British and First Canadian Armies, was decisive in securing an Allied victory in the Normandy Campaign
Editorial provenance
Compiled and edited by World History Database.
Historical context is editorial material; the chronology is generated from World History Database D-Day and Normandy records.
Last reviewed: September 2026.
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