Like Julian I wouldn't put the '42s in the WWII category, to my knowledge there have been 3 war era models.
1822017: WWII 1943, released in 2018. Made using a denim closely resembling the '47 - '51 601xx.
2122041: WWII 1944, olive HBT pocket bags, first appearance of the updated grainy war era denim.
2132001: WWII 1945, flannel pocket bags, nearly identical details to the 2122041 besides the pocket bags.