WWI Cavalry

[warstudent]

I'm not really familiar with WW1 on the East Front. How prominent was Cavalry? Was it the shock weapon that tanks became during WW2?

How does WW1 cavalry compare to WW2 tactically, along with it being more prominent?

I know the IA series allows cavalry to dismount which gives firepower and range benefits. Does cavalry act more like mobile infantry then? More opportunities for cavalry charges vs WW2 battles?