8 9 1 , ▁L w ów ▁– ▁ 2 6 ▁August ▁ 1 9 7 6 , ▁Wars aw ) ▁was ▁a ▁Polish ▁caval ry ▁general , ▁commander ▁of ▁Wiel k opol ska ▁Caval ry ▁Brigade ▁during ▁German ▁and ▁Soviet ▁In vas ion ▁of ▁Poland ▁in ▁September ▁ 1 9 3 9 , ▁in ▁Battle ▁of ▁B z ura ▁commander ▁of ▁Polish ▁caval ry ▁( comb ined ▁caval ry ▁unit ). ▁During ▁the ▁Second ▁Republic , ▁he ▁was ▁Brig ad ier ▁General ▁and , ▁for ▁a ▁short ▁period ▁– ▁from ▁ 1 9 3 0 ▁to ▁ 1 9 3 1 ▁– ▁Abraham ▁was ▁also ▁a ▁member ▁of ▁the ▁Parliament . ▁ ▁Early ▁life ▁and ▁education ▁Abraham ▁was ▁born ▁in ▁L w ów ▁in ▁what ▁was ▁then ▁Austria - H ung ary ▁( l ater ▁in ▁Poland , ▁now ▁L viv , ▁Ukraine ). ▁ ▁He ▁was ▁the ▁son ▁of ▁W ład ys ław ▁Abraham , ▁professor ▁of ▁Can on ▁law ▁and ▁re ctor ▁of ▁the ▁University ▁of ▁L viv . ▁ ▁He ▁studied ▁at ▁the ▁Jes uit ▁School ▁in ▁Ch yr ów ▁in ▁B ą kow ice , ▁gradu ating ▁in ▁ 1 9 1 0 . ▁He ▁then ▁studied ▁at ▁the ▁Fac ulty ▁of ▁Philosoph y ▁and ▁Law ▁at ▁Jan ▁Kaz im ierz ▁University ▁in ▁L viv , ▁gradu ating ▁in ▁ 1 9 1 5 . ▁ ▁Military ▁service ▁ ▁World ▁War ▁I ▁During ▁World ▁War ▁I ▁he ▁served ▁from ▁August ▁ 1 9 1 4 ▁to ▁October ▁