▁a ▁monument ▁comm emor ating ▁Polish ▁sa ppers ▁who ▁died ▁during ▁World ▁War ▁II ▁in ▁ 1 9 4 5 , ▁an ▁observation ▁tower ▁and ▁the ▁Im mac ulate ▁Con ception ▁church , ▁which ▁dates ▁back ▁to ▁the ▁ 1 3 th ▁century . ▁ ▁From ▁the ▁High ▁Middle ▁A ges ▁the ▁region ▁was ▁part ▁of ▁the ▁Kingdom ▁of ▁Poland , ▁Mar gra vi ate ▁of ▁Brandenburg , ▁Czech ▁Kingdom , ▁Te ut onic ▁Order , ▁Brandenburg ▁again , ▁Pr uss ia ▁and ▁Germany ▁from ▁ 1 8 7 1 ▁to ▁ 1 9 4 5 , ▁before ▁becoming ▁again ▁part ▁of ▁Poland ▁after ▁the ▁defeat ▁of ▁Naz i ▁Germany ▁in ▁World ▁War ▁II . ▁ ▁The ▁village ▁has ▁a ▁population ▁of ▁ 1 2 3 ▁and ▁lies ▁on ▁the ▁Od ra ▁River . ▁ ▁References ▁ ▁Category : V ill ages ▁in ▁G ry f ino ▁County <0x0A> </s> ▁The ▁ 1 st ▁Pro ving ▁Gr ound ▁Group ▁is ▁a ▁dis band ed ▁United ▁States ▁Army ▁Air ▁Forces ▁unit . ▁ ▁It ▁was ▁last ▁active ▁with ▁the ▁Army ▁Air ▁Forces ▁Pro ving ▁Gr ound ▁Command , ▁based ▁at ▁Eg lin ▁Field , ▁Florida , ▁where ▁it ▁was ▁dis band ed ▁on ▁ 1 ▁April ▁ 1 9 4 4 . ▁ ▁The ▁unit ' s ▁personnel / equ ip ment / mission ▁was ▁taken ▁over ▁by ▁the ▁ 6 1 0 th ▁Army ▁Air ▁Forces ▁Base ▁Unit ▁( A AF ▁Base ▁Unit ) ▁and ▁ 6 1 1 th ▁A AF ▁Base