Kushite Archers

Overall strategy
Kushite Archers are not as far-ranging as Longbowmen, nor are they as powerful in attack as Composite Bowmen. What they do, however, are two things - fthey have a cheap training cost, and very accurate fire.

As a result, Kushite Archers, massed in vast arrays, can practically make short work of many enemy armies. It does not matter if Longbows and Composite Bows have greater firepower than they do, all Kushite Archers require is to be massed up, then ordered to close in on the foe. As a result, they are a deadly weapon in the Makurian arsenal, to be relied on for infantry superiority. Deploy these behind your Spearmen and use them to whittle down an enemy's heavy and light infantry, then send your superior cavalry in for the kill.

If your foes are Makurians, it is advisable to use cavalry and/or siege weapons like Mangonels or Scorpions to suppress their Kushite Archers. Alternatively, there is another unit: the Slinger. Slingers, while cheap and weak, have superior range albeit low accuracy. It is thus ideal to deploy Slingers against Kushite Archers to draw their fire, then flank their spear guards using Levy Crossbowmen before finishing off using cavalry.