>>10049259>planesthey did, but aluminium shortages were the main bottleneck and you can't exactly use ship steel to build aircraft
>weaponsas far as field artillery and personal weaponry is concerned, japan was pretty well equipped, with the exception of poor SMG levels - not that they were alone in this of course, but even with the simplifications to the type 100 were too late and not in enough numbers to really be meaningful
>tanksthis is where the IJA/IJN shitflinging comes in, but at the same time by the time allied tanks in the theatre became strong enough to require upgrades japan was up to its neck in the latrine already and building more tanks isn't really gonna help if you can't ship them to where the fighting is because your merchant fleet is at the bottom
furthermore, they did realise that the yamato and musashi were useless quickly enough to actually finish converting shinano before they surrendered - not that it managed anything, but that's not really her fault