Yes, but when you you remove them, the terrain will still be visible. To solve this, you can use the "reset all blackmap" effect. But this resets all the terrain on the map that isn't in your current LOS, so I wouldn't suggest it. But yes, you can place and remove them using the "Army deploy" or "Unit create" effects to place, and "Army destroy" or "Destroy" effects to remove them.
oh you can wait for what I can give
you know what I am so you know how I live
try to look proud but you’re not in the slightest
its happening now and it’s always been like this.