I recently mentored a new hire who is mil and can give you the same info. ABX will let you off work for anything that you have orders for (they have to by law as you probably already know). For typical drill wkends, etc., they will tell you to try and bid your sched around your need for days off, again if you have orders you can drop it helps. If you can not hold a schedule with the needed days, you can trade with crew scheduling to accommodate your needs. With that said, you may be working trips/days that you do not wish to and it can be a broken sched. After all the company can't just make trips for you specifically, etc.

So it works just not completely pretty at times.

Honestly this shouldn't be one's primary focus since the higher order of biz is to determine if it (the company) is a job you want and can do. The rest (bidding, vacation, mil leave, etc.) comes secondary.

Thanks for your service regardless of where you end up!