Recently, I have seen some discussions about what would be a better Aksum UU, since Dhow is just a generic Red Sea and Somalian trading ship with little connection to Aksum itself, while the other existing choice, the Shotelai in Humankind, very likely only developed deep into the Solomonic dynasty rather than an early formation.
(Some of the Aksum steles had images of spear and shield carved on the very top, suggesting that these were the actual weaponry used in the Aksum period rather than the shotel. See the example below.)
What would be a good choice for an Aksumite UU then? As a historian, I did what a scholar would do - type some keywords into an academic database, and see if someone more knowledgeable had written something about it.
At first glance, it seems that nothing came out of it, since the Aksumites themselves did not leave many records for us, most of which are just royal inscriptions with heavy propaganda elements. Then, I came across
Merid W. Aregay's "Military Elites in Medieval Ethiopia," which is a landmark study of Ethiopian military history.
Most of the paper is about the early Solomonic military, but Aregay also discussed the Aksumite society and military at the beginning of the paper. He gave a detailed reading of the Aksumite royal inscriptions and analyzed the military organization as reflected between the lines.
- The core of the Aksum was a coalition of several Ge'ez-speaking pastoral warbands, who expanded from the coast to inland and conquered the Agaw farmers, thus forming a state.
- The Aksumite king was initially the most powerful warband leader among many other warband leaders, so his title in the inscription is "King of Kings" (negusa nagast), as a high king (negus) leading many smaller, regional kings or tribal leaders (nagast, plural of negus).
- Each regional king leads their own warband or tribe (angada), and in times of war, their tribe would turn into a regiment (sarwe) and departed to join the campaign.
- For instance, the inscription of the Ezana Stone states that when King Ezana called for a campaign, he would "sent into the field the regiments of Mahaza, Hara, Damawa, Falha, and Sera along the Seda, going up to their cities with walls of stone and of straw..." The names listed here are the tribe-regimes. Ezana himself identified with the Halen tribe.
- Essentially, the Aksumites had a powerful militaristic aristocracy organized along the tribal lines. The Aksumite kings were also highly militaristic, calling themselves the "son of the Unconquered Mahrem" in the inscriptions, Mahrem being the god of war. All the existing Aksum royal inscriptions are about war and conquest.
- Such a militaristic culture passed down to later Ethiopian cultures as well, and heavily impacted the much later Solomonic military.
The summary above is quite informative, and gave us plenty to work with. The Aksumite UU can be these warbands, named "Sarwe," holding spears and shields visually, with an ability related to garrison, or protecting the trade route.
Historically, the Kingdom of Aksum was not simply a trading middleman but also a strong land power; they conquered the Nubian Kingdom of Kush and expanded across the sea into Yemen. Giving the Aksumites an offensive unit is thematically sound, and also provides them with enough military ability in an otherwise defenseless toolkit (the current Aksum design does not have any land-based military ability and would be very hard to defend themselves).