▁against ▁the ▁Muslim ▁r ul ers ▁of ▁Beng al ▁under ▁the ▁command ▁of ▁his ▁Eastern ▁G anga ▁brother ▁in ▁law . ▁ ▁War ▁with ▁the ▁Inv ading ▁Kh il ji ▁Mal ik ▁of ▁Beng al ▁( 1 2 2 3 - 1 2 2 5 ▁A . D .) ▁▁ ▁After ▁defe ating ▁the ▁Kal ch ur is , ▁An ang ab h ima ▁faced ▁a ▁major ▁threat ▁from ▁the ▁inv ading ▁Muslim ▁forces ▁of ▁Kh il ji ▁Mal iks ▁from ▁Beng al . ▁His ▁prime ▁enemy ▁G hi y as ud din ▁I w aj ▁Shah , ▁the ▁r uler ▁of ▁Beng al ▁was ▁a ▁successor ▁of ▁Muhammad ▁bin ▁Bak ht i yar ▁Kh il ji ▁who ▁was ▁a ▁successful ▁military ▁general ▁of ▁Q ut b ▁U d ▁Din ▁A ib ak . ▁G hi y ass ud din ▁had ▁built ▁a ▁powerful ▁n avy ▁and ▁set ▁out ▁for ▁con quest ▁of ▁neighbor ing ▁kingdom s ▁like ▁K amar up a ▁and ▁Od ish a . ▁He ▁inv aded ▁the ▁northern ▁territ ories ▁and ▁also ▁sent ▁naval ▁arm adas ▁over ▁the ▁river ▁Mah an adi ▁to ▁capture ▁his ▁newly ▁founded ▁capital , ▁dest abil ize ▁his ▁military ▁strength ▁and ▁occup y ▁lands . ▁During ▁the ▁series ▁of ▁these ▁events ▁the ▁newly ▁built ▁Bar ab ati ▁Fort ▁was ▁successfully ▁used ▁to ▁rep ulse ▁the ▁enemy ▁attacks ▁from ▁the ▁river . ▁His ▁able ▁minister ▁and ▁military ▁advis er , ▁V ish nu ▁commanded ▁a ▁force ▁that ▁ch ased ▁the ▁inv ading ▁Muslim s ▁on