Siege Expert

-30% attritional losses when besieging or under siege for parent army (cunning based)
+1 cunning (this_agent)
-1 enemy siege hold-out time
(double for city-ports) (accompanying general)

-50% attritional losses when besieging or under siege for parent army (cunning based)
+2 cunning (this_agent)
-2 enemy siege hold-out time
(double for city-ports) (accompanying general)

-70% attritional losses when besieging or under siege for parent army (cunning based)
+3 cunning (this_agent)
-3 enemy siege hold-out time
(double for city-ports) (accompanying general)