I'm looking forward to having some real talk with some real folks!
Hi, I'm Matt, A radar technician.
I control an area with one hydralisk and one zergling on it.
My opponent moves in with many units to claim control of that area, and the battle starts.
I simply burrow my hydralisk and it survives (the zergling dies).
Now, can I withdraw my hydralisk to the area where we fight? Is it still considered friendly although there are enemy units fighting there?
The hydralisk, during he destroy units phase of the skirmish, must retreat to a friendly or empty area on the ACTIVE planet. if not are available, he is destroyed. If there is no spot for him to retreat to in the even that the hydralisk is killed, then you lose it.
Any area on the planet that has an enemy unit on it, is NOT FRIENDLY.