In "How to play?", under the section "Combat", the last sentence says:
That contradicts with rule book page 23,• The loser retreats all their units on that Hex to their Home Base. If the defender loses, and they used at least 1 power via the dial or cards, they gain 1 combat card as compensation.
Please fix the description of "How to play?" as it affected my friend's trust on me as I told him this incorrect information which was quoted from "How to play?".If the loser revealed at least 1 power on the dial or through combat cards, they gain 1 combat card as they retreat.