Game concept

Military Building

The game also links it as Military Buildings.

From the game's encyclopedia

Military Buildings are Buildings whose primary function is to increase the number of Levies they provide to their Holder.

The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.

Military Building is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Military Buildings are Buildings whose primary function is to increase the number of Levies they provide to their Holder." It is part of Building. The game also links it as Military Buildings. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.

for a guide, post or blog

Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.