This Hetalia foto contains
beret hijau, pasukan khas, askar elit, and elit askar.
There might also be
kaki yang terdedah, pantyhose, seluar skintight, skintight, pakaian dalam, hos, hosiery, hose, pakaian dalam bahagian sulit, and rifleman.
The song is Just Around the Riverbend from Pocahontas. I didn't put much thought into how this song fits the Far East Asian countries. Maybe they felt like this right before meeting 19th/20th century Western countries.