Aial is one of the most renown and sought after couriers in the world, that partly has to do with his work morale and partly with the fact that he's an aarakocra (I have to change that name because it's stupid), a humanoid avian creature with six limbs (a pair of wings in addition to the arms).

Aarakocra are primarily gliders and are quite good at it, in fact, they can easily commute between the farthest points of a Westeros-sized continent (though don't expect them to carry around heavy cargo, that's for Sam Porter Bridges).

After takeoff, they can flap their wings for 90 seconds (should be enough to attain a workable altitude) before having to rest, which they can do in the air. They can also basically ignore geographical barriers. As for their safety, they're out of range for anything short of a 14.5mm anti-aircraft gun when in cruising altitude.

Naturally, this would make them perfect to carry messages between armies. The only things you have to watch out for is that:

  1. Aarakocra are low in number, most prefer to stay up in their villages.
  2. Aarakocra prefer not to fight their own kind and you can't make them, since they have a good leverage on you (you can't police them when they fly and it's up to their goodwill whom they deliver the VERY IMPORTANT MESSAGES to).

I wonder how the addition of aarakocra couriers would change how a medieval campaign is conducted (when they're employed on both sides) on the strategic level?

  • $\begingroup$ It's not difficult to think of several ways to coerce all potential couriers to busily shuttle messages all day long, police them while they do it...and to make them fight each other. $\endgroup$
    – user535733
    Dec 23, 2019 at 23:49
  • $\begingroup$ How smart and comfortable are aarakocra among humans? Can you expect one to find the correct battle company in some general area, and deliver the message to correct commander, or they are limited to flying to known castles and keeps? $\endgroup$
    – Alexander
    Dec 23, 2019 at 23:50
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    $\begingroup$ Most of the time it wouldn't make much difference at all. Flying or not, unless he can cover more ground faster than a man on horseback can (or a number of men acting in relay), then he's not going to have that much of an impact. Even in seige situations, he's not going to fly high enough to avoid arrow fire, so the limited flight options you've described really aren't that useful. $\endgroup$ Dec 24, 2019 at 0:01
  • $\begingroup$ speed of communication has a big effect on societies not just the fog of war, how accessible these messengers are is important however. $\endgroup$
    – John
    Dec 24, 2019 at 0:02
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    $\begingroup$ @Mephistopheles so, just to establish a baseline, assuming your aarakora can climb as well as a condor from flat ground (~.3m/sec) and glide as well as a condor (~22:1 glide ratio), 90 seconds of flapping will get you 30 meters off the ground, and you can then glide 660 meters (about half a mile) before you're back on the ground again in about ten or fifteen minutes. $\endgroup$ Dec 24, 2019 at 1:45

3 Answers 3


Thats a CRAZY high climb rate!

Your bird-dudes are flying above the range of a 14.5mm aircraft cannon, which has a maximum engagement cieling of 4,000 meters. These creatures can sustain muscle powered flight for 90 seconds, during which period they are reaching this altitude. This means they are going to be climbing at 44 meters per second, giving them a climb rate of about 8,800 feet per minute. For reference, this is almost the same climb rate as the F-86 Sabre jet fighter.

I'd probably tone that down just a weeeee bit. Perhaps their flight method is more akin to an albatross or a condore where they slowly circle riding thermals to gain altitude, then glide from there. Because otherwise you have bird people with the functional climb and speed capabilities of 1960's era jet aircraft.

That aside, Heres how to use them:


Commanders can now command units much farther afield than they normally could. A commander now no longer has to keep his entire army within riding distance. He can, using these swift couriers, divide his force up among multiple strategic positions, and use them to attack or react much more fluidly. Real Medieval commanders could not conduct strategic small unit manuevering. The best they could do was to send out small raiding and harassment parties and trust thier commanders to do the best. This was unpredictable, and if unlucky, a loss or critical info might not reach him until it was too late to utilize said info. Now, commanders do not have to worry about this and can conduct highly mobile, decentralized strategic actions.


Part of that reaction speed means that he can know the disposition of enemy forces well before hand and plan his responses in advance. Instead of having to wait until they are right on top of him to eye them up, he can set ambushes, destroy infrastructure in front of them like bridges, or close mountain passes. This means a commanders ability to manipulate the conflict enables him to better set the pace of the conflict and attempt to funnel the enemy into a position of his choosing.


Perhaps a commander could sow dischord in enemy rear areas by dropping propaganda leaflets on enemy cities and villaiges. Tell them thier armies have been crushed, or thier charismatic leader has fallen. Panic the public with conflicting reports and false narratives.

Strategic Arson

Fire was a real threat for medieval cities. You could use a few dozen of these bird men to fly in under cover of darkness, start a bunch of fires, then fly away. With luck and skill these fires may rage out of control and cause incredible economic and infrastructural damage to an enemy's rear areas. This forces the enemy to use forces he might otherwise have been able to commit to battle for defending his own assets. Additionally, damage like this is going to make a war far more expensive, and further diminish the number of assets that he could bring to bear on the front.

Counter Intelligence

Dress up some of your bird-men to look like some of the enemy's bird-men and have them carry messeges disguised as official orders to enemy commanders. Order units into ambushes, or give them orders to move to some location in the middle of nowhere where they miss a battle, or even, if you are insaneley lucky, convince them a nearby unit has been discovered to be traitors and to attack them.

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    $\begingroup$ Oh f... That's when in their cruising altitude, which is attained by riding thermals. 4 km is nothing for most birds, the Andean condor tops at 6, the white stork tops at 4.8. $\endgroup$ Dec 25, 2019 at 20:12
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    $\begingroup$ Yeah, the altitude is fine, just not the idea they'd reach it in 90 seconds. $\endgroup$
    – TCAT117
    Dec 25, 2019 at 20:19
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    $\begingroup$ They don't, they use thermals. The 90 seconds are to get to a workable altitude from which they can find a thermal and ride it. $\endgroup$ Dec 25, 2019 at 20:22
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    $\begingroup$ Yeah, maybe I just read it wrong. I've done a bit of flying and I was like "WHOA, thats a HUGE climb rate." But, since such miscomunications are pretty easy and most people don't spend much time memorising stats, maybe in the story just have them fly "beyond reach of any weapon" or something. Some geek like me is apt to start doing math and getting nit-picky. $\endgroup$
    – TCAT117
    Dec 26, 2019 at 1:05
  • $\begingroup$ @TCAT117 -- yeah, I'd have been very scared of a flying creature with that kind of overall performance, because that means they'd have somehow licked compressibility right good XD $\endgroup$
    – Shalvenay
    Dec 26, 2019 at 19:57

In some ways they would be more useful than carrier pigeons as they would be able to deliver messages to a wide variety of locations. However if carrier pigeons exist and are used in your world they would greatly reduce the importance of these creatures.


For a strategic purpose the use case is obvious. Use them as a means of transport for field commanders, prioritize on intercepting them, shooting them down. I fundamentally think this is not that interesting, and that you would have arrived at that yourself.

I think the more interesting use case is tactical. There are 2 primary use-cases here.

1) The Balloon Corps of the Union army during the Civil War fulfilled the vital purpose of information gathering, map making, and recon.

2) Intrinsic Artillery Observation - the forerunner of modern US Army aviation is built from this purpose. Cannonade, Catapults, trebuchets, while individually inaccurate still, could be provided much more accurate targeting information for groupings. This might heavily incentive the use of artillery and archery, both to take out enemy infantry and discourage flyers.

I think personally carrying heavily cargo or munitions is a waste, and is likely to be very ineffective at their carrying capacity, unless they turn into Kamikaze units.


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