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Arrowslits is a technology in Age of Empires II HD: The African Kingdoms available at the University upon reaching the Imperial Age (it was available in the Castle Age before patch 4.8). Once researched, it gives Watch Towers/Guard Towers/Keeps/Donjons +1/+2/+3/+3 attack.

After researching Arrowslits, the number of extra arrows fired from a Keep with five garrisoned fully upgraded Arbalesters is reduced from four arrows down to three, resulting in the same DPS (60 per volley before and after researching Arrowslits). However, taking pierce armor into account, the damage output is, in general, higher after researching Arrowslits. The main exceptions to this are rams (as each arrow only does 1 damage either way), ships, and stone defenses (as each secondary arrow of a tower deals bonus damage against the latter two).

Technology availability
Available Unavailable

Civilization bonuses[]

Team bonuses[]

  • A team containing Malians: Researching Arrowslits is 80% faster.


The African Kingdoms[]

  • Arrowslits is available in the Castle Age.
  • Arrowslits is available to all civilizations.
  • Arrowslits costs 150F/150W.
  • Arrowslits gives Watch Towers/Guard Towers/Keeps +2/+4/+6 attack.
  • Arrowslits only affects the first arrow fired.
  • With patch 4.8, Arrowslits is moved to the Imperial Age.
  • With patch 4.8, Arrowslits becomes unavailable to 11 civilizations.
  • With patch 4.8, Arrowslits costs 250F/250W.
  • With patch 4.8, Arrowslits gives Watch Towers/Guard Towers/Keeps +1/+2/+3 attack.
  • With patch 4.8, Arrowslits affects secondary arrows.

Lords of the West[]


  • None of the four civilizations introduced in The Last Khans have access to Arrowslits. Both civilizations introduced in Lords of the West and Dawn of the Dukes have access to it.


The invention of the arrowslit is attributed to Archimedes during the siege of Syracuse in 214–212 BC (although archaeological evidence supports their existence in Egyptian Middle Kingdom forts around 1860 BC). Slits "of the height of a man and about a palm's width on the outside" allowed defenders to shoot bows and scorpions (an ancient siege engine) from within the city walls. Although used in late Greek and Roman defences, arrowslits were not present in early Norman castles. They are only reintroduced to military architecture towards the end of the 12th century, with the castles of Dover and Framlingham in England, and Richard the Lionheart's Château Gaillard in France. In these early examples, arrowslits were positioned to protect sections of the castle wall, rather than all sides of the castle. In the 13th century, it became common for arrowslits to be placed all around a castle's defences