Only in the 3rd quarter of `45, before that it was a relative 'backwater' by comparison to Nazi smashing, only the massive technical/funds
effort put into the B-29 program & its tag-along Manhattan project, plus a few dozen carriers, support fleet, a USMC division, bit of army,
several score subs, & a snifter of Limey stuff, bugger all really - in the big picture - right?
(I always wondered why the USN took so long to get a 4-blade prop on its R-2800 powered fighters, when it'd be a given for climb off,
& the USAAF P-47 always had one - which only got fatter, as the plane did, hell even their B-26 had 4-bladers from the get go.)