Special: Hold the Line
Guardians are exceptional defenders, and gain large bonuses when they do not move.
Guardians gain +1 defense and +1 attack when they do not move.
If they are located on a hex that grants defensive bonuses, they also gain an additional +1 defense.
Furthermore, if they do not move for their turn, they grant all adjacent allied units a +1 bonus to their defense.
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Q: What would a Guardians’ stats be if it was entrenched in a Stronghold?
A: It would have +2 attack, +4 defense, and at least 30 HP, probably more if the Stronghold is in good repair.