How does the Tank keyword work when assigning damage in combat?

Ruling: When resolving a showdown, damage must be assigned to Tank units first, but any remaining damage can then be assigned to non-Tank units. Tank is most effective when protecting valuable units and when your total might exceeds the opponent's.

Sequence:

• Opponent assigns damage equal to their might
• Damage must be assigned to Tank units first
• Any remaining damage after destroying Tank units can be assigned to non-Tank units

Nuances:

• Tank alone doesn't prevent damage overflow; the Tank unit must have enough health to absorb all incoming damage to fully protect other units
• Tank is more strategically valuable when defending high-value units with sufficient might to survive