Newbie here

Hello comrades, new helldiver here. I passed the training program and got sent into my own spaceship (how cool) Then I got to the big computer in the front on the ship and saw lots of enemies in different zones that need some liberation. Now in all seriousness, what do the players get when zones or entire planets are liberated? I looked it up and found it is mostly for lore purposes, like, that is what we do, liberate... But do you get something when all that is done?