Quote Originally Posted by Skyblade View Post
The important thing about it is that it prevents you from abusing Squad Sight. You can't move a Soldier up as a spotter for your Sniper and Hunker him down without massively cutting down on his visibility, which cuts who your Sniper can see with Squad Sight. Otherwise, Hunkered Down spotters would be pretty much the most effective tactic in the game, as high level Snipers are deadly.
You can just move someone up though, take the shot with the sniper, then have that person hunker down. You don't have to do a soldiers two actions back to back. You can switch to other characters and still go back to them later.