Major Allied Navies of WWII: Five Problems and How to Fix them January 1940

France's effort to cover the Atlantic, Mediterranean, and Far East left too few ships and too little support for each commitment.

The practical January 1940 reform is not a new fleet but a clear plan for where French ships should go and fight if metropolitan France collapses.

French naval weakness grew out of wider interwar assumptions about peace, preparedness, and the political effects of the First World War.

Construction dates for Illustrious, Formidable, Victorious, and Indomitable show how a wartime slowdown delayed essential fleet aviation.

The Royal Navy needed carriers for organic air support, commerce protection, interdiction, and anti-submarine work across distant theaters.

Earlier completion of armored carriers might enlarge the Taranto strike and ease later pressure around Crete, Malta, and Far East deployments.

Royal Oak's loss highlights neglected base defenses, while convertible fast oilers offer a way to add escort aviation for convoys and submarine hunting.

Unlike Axis navies, Britain had King George V-class battleships in production, making carrier delays more urgent than redesigning capital ships already underway.

January 1940 offered a window to harden Malaya and other imperial bases before European and Mediterranean demands pulled naval forces away.

Rawalpindi's 1939 loss made the case for torpedoes in January 1940, while Jervis Bay later showed how the same weapon might threaten a German raider.

The United States needed faster construction, stronger anchorage security, and many more patrol aircraft, seaplanes, combat aircraft, and pilots.

Early performance concerns gave the Bureau of Ordnance time to conduct realistic Mark 14 trials before US submarines depended on it in combat.

Achilles and Sydney demonstrate Commonwealth combat value, while Canada's deliberate expansion shows how a small navy can prepare for rapid wartime growth.

Canada and Australia needed factories, imported machine tools, and domestic production capacity to turn manpower and plans into sustainable fleets.

A domestic submarine program could give Australia an attainable sea-denial force while building the yards and skills needed for naval self-reliance.

Buy machine tools and equipment from the United States, establish domestic production, and prioritize submarines and torpedo boats.

A 1939 exercise report reveals rapid-ranging methods, imaginative destroyer bombardment, and uncertainty about how best to attack bridges and roads.