History / Poland's WW2 Medal records? Polish Cross of Valour and the Bronze Cross of merit with swords [2]

Hello there. I have been trying to research my late grandfather's military activities. I acquired his military records and found he was awarded many medals. I was hoping there is a record of what specific act certain medals were awarded for??

He was awarded the Polish Cross of Valour and the Bronze Cross of merit with swords. I have read the typical reason for getting these, but I am desperate to find out the actual deeds that resulted in these awards??

I hope there is some way to find out!!