diff --git a/src/battle.c b/src/battle.c
index 9fb58751d..18e506192 100644
--- a/src/battle.c
+++ b/src/battle.c
@@ -4307,6 +4307,9 @@ void do_battle(region * r)
 
     /* Auswirkungen berechnen: */
     aftermath(b);
+    if (rule_force_leave(FORCE_LEAVE_POSTCOMBAT)) {
+        force_leave(b->region);
+    }
     /* Hier ist das Gefecht beendet, und wir können die
      * Hilfsstrukturen * wieder löschen: */
 
diff --git a/src/laws.c b/src/laws.c
index fcb7b10ca..b93482716 100755
--- a/src/laws.c
+++ b/src/laws.c
@@ -4337,6 +4337,11 @@ void force_leave(region *r) {
     }
 }
 
+bool rule_force_leave(int flags) {
+    int rules = get_param_int(global.parameters, "rules.owners.force_leave", 0);
+    return (rules&flags) == flags;
+}
+
 static void maintain_buildings_1(region * r)
 {
     maintain_buildings(r, false);
@@ -4438,7 +4443,7 @@ void init_processor(void)
     add_proc_unit(p, follow_unit, "Folge auf Einheiten setzen");
 
     p += 10;                      /* rest rng again before economics */
-    if (get_param_int(global.parameters, "rules.owners.force_leave", 0)) {
+    if (rule_force_leave(FORCE_LEAVE_ALL)) {
         add_proc_region(p, force_leave, "kick non-allies out of buildings/ships");
     }
     add_proc_region(p, economics, "Zerstoeren, Geben, Rekrutieren, Vergessen");
diff --git a/src/laws.h b/src/laws.h
index 4f4188448..6da5ed5de 100755
--- a/src/laws.h
+++ b/src/laws.h
@@ -105,9 +105,13 @@ extern "C" {
     bool seefaction(const struct faction *f, const struct region *r,
         const struct unit *u, int modifier);
     int armedmen(const struct unit *u, bool siege_weapons);
-    void force_leave(struct region *r);
     int peasant_luck_effect(int peasants, int luck, int maxp, double variance);
 
+    #define FORCE_LEAVE_POSTCOMBAT 1
+    #define FORCE_LEAVE_ALL 2
+    bool rule_force_leave(int flag);
+    void force_leave(struct region *r);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/laws.test.c b/src/laws.test.c
index 609b93d03..4c9f43ba5 100644
--- a/src/laws.test.c
+++ b/src/laws.test.c
@@ -230,6 +230,21 @@ static void test_display_cmd(CuTest *tc) {
     test_cleanup();
 }
 
+static void test_rule_force_leave(CuTest *tc) {
+    set_param(&global.parameters, "rules.owners.force_leave", "0");
+    CuAssertIntEquals(tc, false, rule_force_leave(FORCE_LEAVE_ALL));
+    CuAssertIntEquals(tc, false, rule_force_leave(FORCE_LEAVE_POSTCOMBAT));
+    set_param(&global.parameters, "rules.owners.force_leave", "1");
+    CuAssertIntEquals(tc, false, rule_force_leave(FORCE_LEAVE_ALL));
+    CuAssertIntEquals(tc, true, rule_force_leave(FORCE_LEAVE_POSTCOMBAT));
+    set_param(&global.parameters, "rules.owners.force_leave", "2");
+    CuAssertIntEquals(tc, true, rule_force_leave(FORCE_LEAVE_ALL));
+    CuAssertIntEquals(tc, false, rule_force_leave(FORCE_LEAVE_POSTCOMBAT));
+    set_param(&global.parameters, "rules.owners.force_leave", "3");
+    CuAssertIntEquals(tc, true, rule_force_leave(FORCE_LEAVE_ALL));
+    CuAssertIntEquals(tc, true, rule_force_leave(FORCE_LEAVE_POSTCOMBAT));
+}
+
 static void test_force_leave_buildings(CuTest *tc) {
     ally *al;
     region *r;
@@ -779,6 +794,7 @@ CuSuite *get_laws_suite(void)
     SUITE_ADD_TEST(suite, test_enter_building);
     SUITE_ADD_TEST(suite, test_enter_ship);
     SUITE_ADD_TEST(suite, test_display_cmd);
+    SUITE_ADD_TEST(suite, test_rule_force_leave);
     SUITE_ADD_TEST(suite, test_force_leave_buildings);
     SUITE_ADD_TEST(suite, test_force_leave_ships);
     SUITE_ADD_TEST(suite, test_force_leave_ships_on_ocean);