Fly Swatter Trait ID
The gain_xp trait ID for Fly Swatter in Hearts of Iron IV is fly_swatter.
Fly Swatter
NavyAssignable Trait
Grant this trait to your selected commander with the gain_xp command and the trait ID fly_swatter.
About this trait
Realizing the danger posed to even our most powerful ships by airplanes, the Fly Swatter swiftly disposes of anything that flies.