Friendly and enemy soldiers will walk through solid objects like they don't exist. (newgamenetwork.com)
Since birds can not recognize window glass or mirrors as solid objects, they will try to fly through them, leading to severe injury. (petbusiness.com)
Now instead of a circular field of view surrounding units, they can't see past solid objects like buildings, but can see further when placed on high ground. (newgamenetwork.com)