1943
Neptune
Commands Operation Neptune which provides naval support for Operation Overlord
D-Day and Normandy · permanent subject timeline
Operation Neptune
The naval phase of the Normandy invasion. This page combines historical context with 3 matching records drawn directly from the World History Database Normandy archive.
Historical context
Operation Neptune: overview and significance
What happened?
Operation Neptune was the naval component of the Normandy assault. Warships, transports and landing craft carried invasion forces across the English Channel, supported the landings with bombardment and protected the vast movement of men and equipment.
Why was it important?
The cross-Channel operation was one of the largest amphibious undertakings in history. Naval control and landing-craft availability determined the scale, timing and sustainability of the assault.
World History Database records
Operation Neptune timeline
The records below are selected from the 455-record D-Day and Normandy archive and rendered as static HTML in chronological order.
1943
1944
1944 June
Operation Neptune
Preparations included armoured vehicles specially adapted for the assault, developed under the leadership of Maj. Gen. Percy Hobart (Montgomerys brother-in-law, and an armoured warfare specialist)
1944 June
Operation Neptune
A total of 12,000 aircraft under Air Marshal Sir Trafford Leigh-Mallory were to support the landings, including 1,000 transports to fly in the parachute troops; 10,000 tons of bombs would be dropped against the German defenses, and 14,000 attack sorties
Editorial provenance
Sources and editorial review
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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