diff --git a/scripts/tests/bindings.lua b/scripts/tests/bindings.lua
index 189d34769..9aab6fd57 100644
--- a/scripts/tests/bindings.lua
+++ b/scripts/tests/bindings.lua
@@ -34,7 +34,6 @@ function test_process()
 	assert_equal("function", _G.type(eressea.process.siege))
 	assert_equal("function", _G.type(eressea.process.leave))
 	assert_equal("function", _G.type(eressea.process.promote))
-	assert_equal("function", _G.type(eressea.process.renumber))
 	assert_equal("function", _G.type(eressea.process.restack))
 	assert_equal("function", _G.type(eressea.process.set_spells))
 	assert_equal("function", _G.type(eressea.process.set_help))
diff --git a/scripts/tests/orders.lua b/scripts/tests/orders.lua
index a0b03f825..dde9508e9 100644
--- a/scripts/tests/orders.lua
+++ b/scripts/tests/orders.lua
@@ -165,7 +165,7 @@ end
 
 function test_process_renumber()
     u:add_order("NUMMER EINHEIT 'ii'")
-    eressea.process.renumber()
+    process_orders()
     assert_equal(666, u.id)
 end
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b4e600e0d..4616fc8e3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -115,6 +115,7 @@ set (ERESSEA_SRC
   morale.c
   monster.c
   randenc.c
+  renumber.c
   volcano.c
   chaos.c
   spy.c
diff --git a/src/bind_process.c b/src/bind_process.c
index e8420c654..2b44eb19d 100755
--- a/src/bind_process.c
+++ b/src/bind_process.c
@@ -182,11 +182,6 @@ void process_promote(void) {
     process_cmd(K_PROMOTION, promotion_cmd, 0);
 }
 
-void process_renumber(void) {
-    process_cmd(K_NUMBER, renumber_cmd, 0);
-    renumber_factions();
-}
-
 void process_restack(void) {
     restack_units();
 }
diff --git a/src/laws.c b/src/laws.c
index 33fd56779..cf365fc7a 100644
--- a/src/laws.c
+++ b/src/laws.c
@@ -32,6 +32,7 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "monster.h"
 #include "move.h"
 #include "randenc.h"
+#include "renumber.h"
 #include "spy.h"
 #include "study.h"
 #include "wormhole.h"
@@ -2742,74 +2743,6 @@ void sinkships(struct region * r)
     }
 }
 
-static attrib_type at_number = {
-    "faction_renum",
-    NULL, NULL, NULL, NULL, NULL, NULL,
-    ATF_UNIQUE
-};
-
-void renumber_factions(void)
-/* gibt parteien neue nummern */
-{
-    struct renum {
-        struct renum *next;
-        int want;
-        faction *faction;
-        attrib *attrib;
-    } *renum = NULL, *rp;
-    faction *f;
-    for (f = factions; f; f = f->next) {
-        attrib *a = a_find(f->attribs, &at_number);
-        int want;
-        struct renum **rn;
-        faction *old;
-
-        if (!a)
-            continue;
-        want = a->data.i;
-        if (fval(f, FFL_NEWID)) {
-            ADDMSG(&f->msgs, msg_message("renumber_twice", "id", want));
-            continue;
-        }
-        old = findfaction(want);
-        if (old) {
-            a_remove(&f->attribs, a);
-            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
-            continue;
-        }
-        if (!faction_id_is_unused(want)) {
-            a_remove(&f->attribs, a);
-            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
-            continue;
-        }
-        for (rn = &renum; *rn; rn = &(*rn)->next) {
-            if ((*rn)->want >= want)
-                break;
-        }
-        if (*rn && (*rn)->want == want) {
-            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
-        }
-        else {
-            struct renum *r = calloc(sizeof(struct renum), 1);
-            r->next = *rn;
-            r->attrib = a;
-            r->faction = f;
-            r->want = want;
-            *rn = r;
-        }
-    }
-    for (rp = renum; rp; rp = rp->next) {
-        f = rp->faction;
-        a_remove(&f->attribs, rp->attrib);
-        renumber_faction(f, rp->want);
-    }
-    while (renum) {
-        rp = renum->next;
-        free(renum);
-        renum = rp;
-    }
-}
-
 void restack_units(void)
 {
     region *r;
@@ -2897,118 +2830,6 @@ void restack_units(void)
     }
 }
 
-int renumber_cmd(unit * u, order * ord)
-{
-    char token[128];
-    const char *s;
-    int i = 0;
-    faction *f = u->faction;
-
-    init_order(ord);
-    s = gettoken(token, sizeof(token));
-    switch (findparam_ex(s, u->faction->locale)) {
-
-    case P_FACTION:
-        s = gettoken(token, sizeof(token));
-        if (s && *s) {
-            int id = atoi36((const char *)s);
-            attrib *a = a_find(f->attribs, &at_number);
-            if (!a)
-                a = a_add(&f->attribs, a_new(&at_number));
-            a->data.i = id;
-        }
-        break;
-
-    case P_UNIT:
-        s = gettoken(token, sizeof(token));
-        if (s && *s) {
-            i = atoi36((const char *)s);
-            if (i <= 0 || i > MAX_UNIT_NR) {
-                cmistake(u, ord, 114, MSG_EVENT);
-                break;
-            }
-
-            if (forbiddenid(i)) {
-                cmistake(u, ord, 116, MSG_EVENT);
-                break;
-            }
-
-            if (findunitg(i, u->region)) {
-                cmistake(u, ord, 115, MSG_EVENT);
-                break;
-            }
-        }
-        renumber_unit(u, i);
-        break;
-
-    case P_SHIP:
-        if (!u->ship) {
-            cmistake(u, ord, 144, MSG_EVENT);
-            break;
-        }
-        if (ship_owner(u->ship) != u) {
-            cmistake(u, ord, 146, MSG_EVENT);
-            break;
-        }
-        if (u->ship->coast != NODIRECTION) {
-            cmistake(u, ord, 116, MSG_EVENT);
-            break;
-        }
-        s = gettoken(token, sizeof(token));
-        if (s == NULL || *s == 0) {
-            i = newcontainerid();
-        }
-        else {
-            i = atoi36((const char *)s);
-            if (i <= 0 || i > MAX_CONTAINER_NR) {
-                cmistake(u, ord, 114, MSG_EVENT);
-                break;
-            }
-            if (findship(i) || findbuilding(i)) {
-                cmistake(u, ord, 115, MSG_EVENT);
-                break;
-            }
-        }
-        sunhash(u->ship);
-        u->ship->no = i;
-        shash(u->ship);
-        break;
-    case P_BUILDING:
-    case P_GEBAEUDE:
-        if (!u->building) {
-            cmistake(u, ord, 145, MSG_EVENT);
-            break;
-        }
-        if (building_owner(u->building) != u) {
-            cmistake(u, ord, 148, MSG_EVENT);
-            break;
-        }
-        s = gettoken(token, sizeof(token));
-        if (*s == 0) {
-            i = newcontainerid();
-        }
-        else {
-            i = atoi36((const char *)s);
-            if (i <= 0 || i > MAX_CONTAINER_NR) {
-                cmistake(u, ord, 114, MSG_EVENT);
-                break;
-            }
-            if (findship(i) || findbuilding(i)) {
-                cmistake(u, ord, 115, MSG_EVENT);
-                break;
-            }
-        }
-        bunhash(u->building);
-        u->building->no = i;
-        bhash(u->building);
-        break;
-
-    default:
-        cmistake(u, ord, 239, MSG_EVENT);
-    }
-    return 0;
-}
-
 /* blesses stone circles create an astral protection in the astral region
  * above the shield, which prevents chaos suction and other spells.
  * The shield is created when a magician enters the blessed stone circle,
diff --git a/src/laws.h b/src/laws.h
index c5e9d573c..5406a50d4 100755
--- a/src/laws.h
+++ b/src/laws.h
@@ -59,7 +59,6 @@ extern "C" {
     void defaultorders(void);
     void quit(void);
     void monthly_healing(void);
-    void renumber_factions(void);
     void restack_units(void);
     void update_long_order(struct unit *u);
     void sinkships(struct region * r);
@@ -83,7 +82,6 @@ extern "C" {
     int leave_cmd(struct unit *u, struct order *ord);
     int pay_cmd(struct unit *u, struct order *ord);
     int promotion_cmd(struct unit *u, struct order *ord);
-    int renumber_cmd(struct unit *u, struct order *ord);
     int combatspell_cmd(struct unit *u, struct order *ord);
     int contact_cmd(struct unit *u, struct order *ord);
     int guard_on_cmd(struct unit *u, struct order *ord);
diff --git a/src/process.pkg b/src/process.pkg
index 5db5c7344..a81917293 100755
--- a/src/process.pkg
+++ b/src/process.pkg
@@ -25,7 +25,6 @@ module eressea {
         void process_leave @ leave(void); /* LEAVE */
         void process_maintenance @ maintenance(void); /* PAY */
         void process_promote @ promote(void); /* PROMOTE */
-        void process_renumber @ renumber(void); /* RENUMBER */
         void process_restack @ restack(void); /* SORT */
         void process_setspells @ set_spells(void); /* COMBATSPELL */
         void process_sethelp @ set_help(void); /* HELP */
diff --git a/src/process.pkg.c b/src/process.pkg.c
index 787258a96..42dff20ff 100644
--- a/src/process.pkg.c
+++ b/src/process.pkg.c
@@ -531,30 +531,6 @@ static int tolua_process_eressea_process_promote00(lua_State* tolua_S)
 #endif
 }
 
-/* function: process_renumber */
-static int tolua_process_eressea_process_renumber00(lua_State* tolua_S)
-{
-#ifndef TOLUA_RELEASE
- tolua_Error tolua_err;
- if (
- !tolua_isnoobj(tolua_S,1,&tolua_err)
- )
- goto tolua_lerror;
- else
-#endif
- {
- {
-  process_renumber();
- }
- }
- return 0;
-#ifndef TOLUA_RELEASE
- tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'renumber'.",&tolua_err);
- return 0;
-#endif
-}
-
 /* function: process_restack */
 static int tolua_process_eressea_process_restack00(lua_State* tolua_S)
 {
@@ -1021,7 +997,6 @@ LUALIB_API int luaopen_process (lua_State* tolua_S)
  tolua_function(tolua_S,"leave",tolua_process_eressea_process_leave00);
  tolua_function(tolua_S,"maintenance",tolua_process_eressea_process_maintenance00);
  tolua_function(tolua_S,"promote",tolua_process_eressea_process_promote00);
- tolua_function(tolua_S,"renumber",tolua_process_eressea_process_renumber00);
  tolua_function(tolua_S,"restack",tolua_process_eressea_process_restack00);
  tolua_function(tolua_S,"set_spells",tolua_process_eressea_process_set_spells00);
  tolua_function(tolua_S,"set_help",tolua_process_eressea_process_set_help00);
diff --git a/src/renumber.c b/src/renumber.c
new file mode 100644
index 000000000..259dfcc2b
--- /dev/null
+++ b/src/renumber.c
@@ -0,0 +1,198 @@
+#include <platform.h>
+#include "renumber.h"
+
+#include <kernel/config.h>
+#include <kernel/faction.h>
+#include <kernel/building.h>
+#include <kernel/ship.h>
+#include <kernel/unit.h>
+#include <kernel/order.h>
+#include <kernel/messages.h>
+
+#include <util/attrib.h>
+#include <util/base36.h>
+#include <util/parser.h>
+
+#include <assert.h>
+#include <stdlib.h>
+
+static attrib_type at_number = {
+    "faction_renum",
+    NULL, NULL, NULL, NULL, NULL, NULL,
+    ATF_UNIQUE
+};
+
+void renumber_factions(void)
+/* gibt parteien neue nummern */
+{
+    struct renum {
+        struct renum *next;
+        int want;
+        faction *faction;
+        attrib *attrib;
+    } *renum = NULL, *rp;
+    faction *f;
+    for (f = factions; f; f = f->next) {
+        attrib *a = a_find(f->attribs, &at_number);
+        int want;
+        struct renum **rn;
+        faction *old;
+
+        if (!a)
+            continue;
+        want = a->data.i;
+        if (fval(f, FFL_NEWID)) {
+            ADDMSG(&f->msgs, msg_message("renumber_twice", "id", want));
+            continue;
+        }
+        old = findfaction(want);
+        if (old) {
+            a_remove(&f->attribs, a);
+            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
+            continue;
+        }
+        if (!faction_id_is_unused(want)) {
+            a_remove(&f->attribs, a);
+            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
+            continue;
+        }
+        for (rn = &renum; *rn; rn = &(*rn)->next) {
+            if ((*rn)->want >= want)
+                break;
+        }
+        if (*rn && (*rn)->want == want) {
+            ADDMSG(&f->msgs, msg_message("renumber_inuse", "id", want));
+        }
+        else {
+            struct renum *r = calloc(sizeof(struct renum), 1);
+            r->next = *rn;
+            r->attrib = a;
+            r->faction = f;
+            r->want = want;
+            *rn = r;
+        }
+    }
+    for (rp = renum; rp; rp = rp->next) {
+        f = rp->faction;
+        a_remove(&f->attribs, rp->attrib);
+        renumber_faction(f, rp->want);
+    }
+    while (renum) {
+        rp = renum->next;
+        free(renum);
+        renum = rp;
+    }
+}
+
+int renumber_cmd(unit * u, order * ord)
+{
+    char token[128];
+    const char *s;
+    int i = 0;
+    faction *f = u->faction;
+
+    init_order(ord);
+    s = gettoken(token, sizeof(token));
+    switch (findparam_ex(s, u->faction->locale)) {
+
+    case P_FACTION:
+        s = gettoken(token, sizeof(token));
+        if (s && *s) {
+            int id = atoi36((const char *)s);
+            attrib *a = a_find(f->attribs, &at_number);
+            if (!a)
+                a = a_add(&f->attribs, a_new(&at_number));
+            a->data.i = id;
+        }
+        break;
+
+    case P_UNIT:
+        s = gettoken(token, sizeof(token));
+        if (s && *s) {
+            i = atoi36((const char *)s);
+            if (i <= 0 || i > MAX_UNIT_NR) {
+                cmistake(u, ord, 114, MSG_EVENT);
+                break;
+            }
+
+            if (forbiddenid(i)) {
+                cmistake(u, ord, 116, MSG_EVENT);
+                break;
+            }
+
+            if (findunitg(i, u->region)) {
+                cmistake(u, ord, 115, MSG_EVENT);
+                break;
+            }
+        }
+        renumber_unit(u, i);
+        break;
+
+    case P_SHIP:
+        if (!u->ship) {
+            cmistake(u, ord, 144, MSG_EVENT);
+            break;
+        }
+        if (ship_owner(u->ship) != u) {
+            cmistake(u, ord, 146, MSG_EVENT);
+            break;
+        }
+        if (u->ship->coast != NODIRECTION) {
+            cmistake(u, ord, 116, MSG_EVENT);
+            break;
+        }
+        s = gettoken(token, sizeof(token));
+        if (s == NULL || *s == 0) {
+            i = newcontainerid();
+        }
+        else {
+            i = atoi36((const char *)s);
+            if (i <= 0 || i > MAX_CONTAINER_NR) {
+                cmistake(u, ord, 114, MSG_EVENT);
+                break;
+            }
+            if (findship(i) || findbuilding(i)) {
+                cmistake(u, ord, 115, MSG_EVENT);
+                break;
+            }
+        }
+        sunhash(u->ship);
+        u->ship->no = i;
+        shash(u->ship);
+        break;
+    case P_BUILDING:
+    case P_GEBAEUDE:
+        if (!u->building) {
+            cmistake(u, ord, 145, MSG_EVENT);
+            break;
+        }
+        if (building_owner(u->building) != u) {
+            cmistake(u, ord, 148, MSG_EVENT);
+            break;
+        }
+        s = gettoken(token, sizeof(token));
+        if (*s == 0) {
+            i = newcontainerid();
+        }
+        else {
+            i = atoi36((const char *)s);
+            if (i <= 0 || i > MAX_CONTAINER_NR) {
+                cmistake(u, ord, 114, MSG_EVENT);
+                break;
+            }
+            if (findship(i) || findbuilding(i)) {
+                cmistake(u, ord, 115, MSG_EVENT);
+                break;
+            }
+        }
+        bunhash(u->building);
+        u->building->no = i;
+        bhash(u->building);
+        break;
+
+    default:
+        cmistake(u, ord, 239, MSG_EVENT);
+    }
+    return 0;
+}
+
diff --git a/src/renumber.h b/src/renumber.h
new file mode 100644
index 000000000..244b8043f
--- /dev/null
+++ b/src/renumber.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#ifndef H_RENUMBER
+#define H_RENUMBER
+
+	struct unit;
+	struct order;
+
+    void renumber_factions(void);
+    int renumber_cmd(struct unit *u, struct order *ord);
+
+#endif