for me, it's the New Guinea campaign because the scale is so huge and nobody outside of AUS knows about it
>Japs commit a larger invasion force than the US/UK&Commonwealth did in Operation Husky to invade New Guinea and set up bases for bombing/landing in Northern Australia
>their recon is literally based on some popular adventure novel from the 1930s that said that the Kokoda track was one big valley that went north to south so it would be EZ peazy
>it actually crosses like 5 different biomes including snowcapped mountains, tropical jungle, dense woodland and highland prairie and the Aussies fight them across every one
>Aussies have a tiny colonial force and recruit stone-age cannibal headhunters to fight the japs in the jungle
>they manage to stall Jap advance overland, IJA's medieval tier logistics kicks in and they wind up losing something like 98% of their casualties to starvation or preventable disease
>America ends the campaign using it as an opportunity to practice amphibious landings in coordination with paratrooper drops basically just to flex on the japs who are all starving and shitting themselves to death

>>513864830
they already did this in WWII. recruited a bunch of stone age headhunters and armed them with modern weapons to hunt japs through the jungle

Some photos from the New Guinea campaign featuring armed Papuan tribesmen