Poland

Poland, officially known as the Republic of Poland, was a country located in Europe before the Great War.

Fallout 2

 * Ryan refers to himself as the "Polish Hammer."

Fallout 3

 * Nicolaus Copernicus was a famous Polish astronomer.
 * Composer Allan Gray was of Polish descent.

Fallout 4

 * The pre-War foreman of Quincy Quarries, Ralph, was of Polish descent.

Apperances
Poland is mentioned only in Fallout 2, Fallout 3 and Fallout 4.