There are huge institutional challenges for this to occur. Production facilities have all been consolidated (as they have in the US since the end of the Cold War.) Budgets are also a problem; the majority of NATO members aren't even making the 2% of GDP goal. And there are also some demographic issues; the population of the EU is aging and military service doesn't have as strong an appeal. Will Germany reinstate the draft?

And some things do take decades, even in perfect conditions. Building up a navy takes time due to the long construction timelines for ships. Developing coordination for combined arms operations requires both good officers and non-coms. These take time to develop as well, and need to be continually sustained.

There's always money for weapons, don't worry. The US economy can only grow after this war. The industry will be going full steam. Across Eastern Europe there have been arms deals with Poland, Romania. Germany is slow as usual but they'll probably get their shit together. France has already redefined and reworked their arms strategy based on civillian tech and spare parts so they don't need to reconvert too much. The US Navy ship building is also workable if they purchase South Korean or Japanese frigates and destroyers.

You can train non commissioned officers in a matter of months (like 2-3). And during WW2 the US was pushing out 3 ships per day.

If you focus efforts, it doesn’t take long at all.

You can set up a schedule to train non-coms in 2-3 months, that doesn't mean they'll be very good. Experience is extremely valuable at this level.

And surely you understand that the US economy and state of industry in 1943 (when the Liberty ships were being launched daily) is quite different than today? Only one country currently has the shipbuilding capacity to even think of something like that. The US (and Europe) have closed down a huge number of shipyards since the end of the Cold War, and it would take decades to create new ones, with trained workforces. All the US shipyards are short workers in almost all categories.

> You can set up a schedule to train non-coms in 2-3 months, that doesn't mean they'll be very good. Experience is extremely valuable at this level.

This one statement means you don’t know what you’re talking about. Non commissioned officers are E4 rank, you can leave bootcamp at E3 rank. 6 months later get E4. NCO only requires experience at the E7 or above level, which don’t fight only lead.