Operation Husky
Allies land on Sicily (Operation Husky): almost 3,000 landing craft, and supply ships involved in landings
Permanent historical records · Updated 2026-11-03
1943 in United States of America — Page 2
Explore 240 historical events and records for United States of America in 1943.
Historical records for United States of America in 1943
Sorted by month and day. Records with no month are shown last. Showing 40 of 240 unique records.
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29Named events on this page
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July
Capture of Palermo
Caputres the Sicillian capital of Palermo
Operation Overlord
Morgan & COSSAC advise landong in Normandy within the Bay of the Seine close to Caen
August
Capture of Gela
Captures Gela during the 1st American landings on Sicily
Capture of Sicily
The Allies complete the capture of Sicily
Capture of Messina
Arrives at Messina 2 hours ahead of Montgomery
Capture of Sicily
Sicily is in Allied hands after a campaign lasting 38 days & costing 31,000 casualties
Meeting with In Quebec
Churchill & Roosevelt meet in Quebec, Canada to further discuss Overlord timetable, planning
Operation Overlord
Churchill & Roosevelt meet in Quebec, Canada to further discuss Overlord timetable, planning
Permanent Brigadier General Appointment
Receives a permanent appointment as Brigadier General in the Regular Army.
Permanent Major General Promotion
Promoted permanently to Major General on the same day as his permanent brigadier-general appointment.
First Alpha Unit Operation
The first Alpha electromagnetic-separation unit at Y-12 begins operation as Oak Ridge expands into full industrial production.
First Army
Commands the US First Army during Operation Overlord
Operation Overlord
Commands the US First Army during Operation Overlord
September
Armistice
Italy announces an armistice
Result of Surrender of Italy
Italy's surrender removes the country from the Axis war effort and opens the peninsula to further Allied operations.
Surrender of Italy
Italy surrenders to the Allies
Capture of Salerno
Units of the 5th Army land on the Italian mainland at Salerno
Capture of Salerno
The 5th US Army lands in the Gulf of Salerno as part of an operation to capture Naples
First Gun Assembly Test Shot
The Los Alamos gun-assembly programme fires its first test shot while concentrating on a high-velocity plutonium gun design.
Kistiakowsky Recruitment Proposal
Oppenheimer proposes recruiting explosives expert George Kistiakowsky to strengthen the expanding implosion programme.
Invasion of Rhodes
Allied commanders agree to postpone an invasion of Rhodes in order to hold Italy
Operation Overlord
Ordered by the CCS to take "necessary executive action" to implement Overlord
October
Siege of Naples
Leads the 5th Army into Naples
Manhattan Project
Construction begins for the first reactor at the Hanford Site
Operation Overlord
The HQ for the 1st US Army opens in England
Operation Rankin
Operation Rankin could win the war ahead of Operation Overlord
K-25 First Concrete
The first concrete is poured for the K-25 gaseous-diffusion plant building at Oak Ridge.
Siege of Rome
Cables the Combined Chiefs of Staff calling for extra manpower & landing craft
Diplomatic Plan
Announces a plan for the post-war rehabilitation & reconstruction of Russia
Invasion of Italy
Offerred 60 Landing Ship Tanks until 15 Dec
Strike
Miners go on strike
Alliance United States and Russia
Meets the Russians & confirms the Allied decision at Quebec to launch Overlord
Manhattan Project
Project W-47, later called Project Alberta set up to plan delivery of the bomb
Manhattan Project
Project W-47, later called Project Alberta set up to plan delivery of the bomb
Operation Overlord
Arrives in England to take command of the First Army
Operation Overlord
Meets Russian representives & confirms the decision at Quebec to launch Overlord
Project Alberta
Project W-47, later called Project Alberta set up to plan delivery of the bomb
Project Alberta
Project W-47, later called Project Alberta set up to plan delivery of the bomb
Project W-47
Project W-47, later called Project Alberta set up to plan delivery of the bomb
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.