Modifier
Military Expansion
martial_improvements_modifier
This holding has received defensive improvements.
Military Expansion (modifier ID martial_improvements_modifier) is a named modifier in Crusader Kings III, in the Wards and Wardens files. It gives Defender Holding Advantage +15. No add_…_modifier command in common/, events/ or history/ adds it. Patch 1.20.1.2, from game/common/modifiers/01_dlc_bp2_yearly_1_modifiers.txt.
Effects
Where the game adds it
No add_…_modifier command in common/, events/ or history/ adds it.
Source: game/common/modifiers/01_dlc_bp2_yearly_1_modifiers.txt (line 48), the English localisation (martial_improvements_modifier, martial_improvements_modifier_desc) and every add_…_modifier / remove_…_modifier in common/, events/ and history/, Crusader Kings III 1.20.1.2.