Pretty sure the airbase needs to be in a hex you controlled at the start of your turn. If you are placing it in newly conquered territory you will be subject to the normal attrition rates.

<r> Relatively new to the game but have played several practice rounds to around turn 12. Last 2 sessions I've noticed 4th Pzr Grp HQ starts turn 1 with zero supplies. Has this been the case every game I've played and just now noticed, or is this something different? Also, last session I used HQ ...