learn_commander_trait_success_effect

learn_commander_trait_success_effect = {
	remove_character_flag = being_taught_commander_trait
	if = {
		limit = {
			has_relation_mentor = scope:teacher
			NOT = { exists = scope:long_term_mentor }
			scope:teacher = {
				is_alive = yes
			}
		}
		remove_relation_mentor = scope:teacher
	}
	if = {
		limit = {
			scope:teacher = {
				is_alive = yes
			}
		}
		hidden_effect = {
			add_opinion = {
				target = scope:teacher
				modifier = taught_me_commander_trait_opinion
			}
		}
	}
	if = {
		limit = { var:commander_trait_being_taught = flag:logistician }
		add_trait = logistician
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:military_engineer }
		add_trait = military_engineer
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:aggressive_attacker }
		add_trait = aggressive_attacker
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:unyielding_defender }
		add_trait = unyielding_defender
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:forder }
		add_trait = forder
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:flexible_leader }
		add_trait = flexible_leader
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:desert_warrior }
		add_trait = desert_warrior
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:jungle_stalker }
		add_trait = jungle_stalker
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:winter_soldier }
		add_trait = winter_soldier
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:reaver }
		add_trait = reaver
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:reckless }
		add_trait = reckless
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:holy_warrior }
		add_trait = holy_warrior
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:open_terrain_expert }
		add_trait = open_terrain_expert
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:rough_terrain_expert }
		add_trait = rough_terrain_expert
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:forest_fighter }
		add_trait = forest_fighter
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:cautious_leader }
		add_trait = cautious_leader
	}
	else_if = {
		limit = { var:commander_trait_being_taught = flag:organizer }
		add_trait = organizer
	}
}

As written in game/common/scripted_effects/00_martial_lifestyle_effects.txt.