Question:
Rule 23I2 states that Allied air units may enter and leave garrison boxes. Rule 37E1 says that the Allied player “must maintain garrisons in certain districts or pay a penalty”. Does this mean that the Allied player can voluntarily exit air units (for instance, the 20 fighters from the Britain garrison) and then later return them to the garrison again? If yes, when is the penalty implemented?
Answer:
Yes, you can choose to have air units leave a garrison. They may do so during a friendly initial phase, simply move the air unit from the garrison box to the associated holding box. This occurs when you do replacement/reinforcement activities. Note that you check required garrisons before replacement and reinforcement activities. So, if you remove one or more air units from a garrison, you will be short that many air units from the garrison at the beginning of your next friendly initial phase. When you check required garrisons, you will be penalized one ARP per air unit missing from the harrison at that time. You will be unable to have any air units enter that garrison before the penalty is assessed, due to the sequence of play.
Source:
TEM 73

