Poland
 
Polish Air Force captainís visor cap
This well-worn cap features a single small line of braid along the visor. In combination with the four stars on the hat band, this means the hat belonged to a captain, probably during the 60s or 70s. The blue band indicates that this officer was part of the internal defence forces (WOW). Regular air force personnel have black bands, military police have white, border troops have green and the First Warsaw MOTINFDIV has yellow. These colors are also used by the army.