Some wartime sloops could still support patrol and fisheries-protection tasks, while later armoured carriers might be adaptable only with extensive work.
If every major navy suddenly recovered all of its Second World War ships and had to modernize them, the first problem would be rebuilding the yards needed to handle the work.
Even after finding docks, a restored wartime fleet would need huge crews and engineers who understand machinery that has disappeared from modern service.
A carrier could be justified for land attack and fleet air defence even without an opposing carrier, unlike a battleship built around capital-ship combat.
Large inherited cruiser fleets reduced pressure for immediate replacement while the Tiger class tested technologies for the Royal Navy's next generation.
A navy expected to appear around the world still needed cruisers because they performed presence and deployment duties more naturally than battleships.
Cavagnari entered the naval academy unusually young, served abroad and in a ministerial post, but advanced more slowly than a future service chief might be expected to do.
Commands of a destroyer flotilla, the naval academy, and a cruiser division preceded Cavagnari's abrupt selection when Mussolini took the naval portfolio himself.
Cavagnari had less time to prepare than Raeder or Fushimi, yet Italy began with a credible position against France and direct access to Mussolini, advantages he failed to turn into effective preparation.
Cavagnari favoured battleships and submarines while carrier and cruiser development stalled, producing a force mix poorly suited to Mediterranean strategy.
Japan's notice of withdrawal from the naval-treaty system gave Cavagnari an opening to press Mussolini for cruisers, carriers, and naval air coordination, but he did not use it.
French Atlantic ports and rail links, Royal Navy control at Gibraltar, and Britain's pragmatic need to keep France in the war limited what Italy's battleship-centred fleet could achieve.
The inconclusive 1940 Battle of Calabria, known in Italy as the Battle of Punta Stilo, exposed a missed opportunity for Italy's strong surface force and, alongside Taranto, contributed to Cavagnari's fall from office.
Cavagnari's succession by Arturo Riccardi and then Raffaele de Courten illustrates Italian command turnover, while Riccardi represents the naval-aviation expertise Italy lacked before the war.
The series uses Cavagnari and other Axis chiefs to build a fairer benchmark for judging Karl Dönitz than a simple comparison with British or American admirals.
HMS Flamborough Head, later HMCS Cape Breton, shows how Liberty, Victory, Fort, and Park families supplied adaptable volume for mobile workshops as well as cargo.
The scarcity of dedicated maintenance ships suggests that modern fleets are poorly equipped to repair damage and sustain operations through a prolonged conflict.
Interwar Royal Navy planning paired usable islands and ports with repair ships, depot vessels, and floating docks to support forces far from home bases.
Britain could project bombers and a carrier force toward the Falklands, while Argentina could not impose a comparable conventional threat on the British home islands.
Britain improvised support for the distant Falklands deployment despite having lacked purpose-built mobile repair for a likely Soviet conflict around the GIUK gap.
The former HMS Flamborough Head remained useful as HMCS Cape Breton's floating machine shop into the 1990s, showing the durable value of repair infrastructure.
Fushimi and Erich Raeder trained in Germany at roughly the same time, but the video warns against turning that coincidence into an Axis conspiracy story.