on_actions = {
 on_monthly = {
  effect = {
   if = { limit = { is_ai = no } ws_apply_national_doctrine = yes }
   if = {
    limit = { is_ai = yes OR = { tag = GER tag = SOV tag = JAP tag = USA tag = ENG } }
    ws_initialize = yes
    ws_apply_national_doctrine = yes
   }
  }
 }
 # ROOT = army leader, FROM = owner country.
 on_army_leader_won_combat = {
  effect = {
   FROM = { if = { limit = { has_war = yes } ws_v15_record_battlefield_wreckage = yes } }
  }
 }
 # ROOT = new controller, FROM = old controller, FROM.FROM = state.
 # A recent-battle modifier gives each state a 180-day anti-farm cooldown, but permits later wars to yield wreckage again.
 on_state_control_changed = {
  effect = {
   if = {
    limit = { ROOT = { has_war_with = FROM } FROM.FROM = { NOT = { has_dynamic_modifier = ws_battlefield_wreckage_state } } }
    FROM.FROM = {
     add_dynamic_modifier = { modifier = ws_battlefield_wreckage_state days = 180 }
    }
    ROOT = { ws_v15_record_captured_state = yes }
   }
  }
 }
 # ROOT = capitulating country, FROM = victor/recipient in the vanilla hook.
 on_capitulation_immediate = {
  effect = {
   # ROOT = capitulated country, FROM = winner. Land wreckage is always recorded.
   FROM = { ws_v15_record_capitulation = yes }
   # Naval wreckage is tested at the immediate hook, before capitulation cleanup removes/transfers units.
   if = {
    limit = { ROOT = { OR = { has_navy_size = { size > 0 } has_navy_size = { size > 0 type = convoy } } } }
    FROM = { ws_v152_record_naval_wreckage = yes }
   }
  }
 }
}