diff --git a/.travis.yml b/.travis.yml
index 003fb67ad..78aaf3648 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,8 @@ script: s/travis-build
 addons:
   apt:
     packages:
-      - liblua5.2-dev
+      - liblua5.1-dev
+      - libtolua-dev
       - libncurses5-dev
       - libsqlite3-dev
       - libxml2-dev
diff --git a/res/eressea/equipment.xml b/res/eressea/equipment.xml
index f35505bc0..bf7e38376 100644
--- a/res/eressea/equipment.xml
+++ b/res/eressea/equipment.xml
@@ -269,11 +269,6 @@
     <skill name="melee" level="1"/>
   </set>
 
-  <set name="new_centaur_unit">
-    <skill name="polearm" level="1"/>
-    <skill name="melee" level="1"/>
-  </set>
-
   <set name="seaserpent_spoils">
     <item name="dragonblood" amount="6"/>
     <item name="seaserpenthead" amount="1"/>
diff --git a/res/races/zombie.xml b/res/races/zombie.xml
index faecf021d..8c23aea83 100644
--- a/res/races/zombie.xml
+++ b/res/races/zombie.xml
@@ -3,7 +3,7 @@
 	recruitcost="-1" maintenance="0" weight="1000" capacity="440" speed="1.000000"
 	hp="20" damage="1d5" unarmedattack="-2" unarmeddefense="-2" playerrace="no"
 	walk="yes" shapeshift="no" giveperson="no" giveunit="no"
-	getitem="no" recruitethereal="no" equipment="yes" scarepeasants="yes"
+	getitem="no" equipment="yes" scarepeasants="yes"
 	cansteal="no" unarmedguard="yes" absorbpeasants="yes" noheal="yes"
 	undead="yes" resistpierce="yes">
 	<ai splitsize="1000" moverandom="yes" learn="yes" />
diff --git a/src/economy.c b/src/economy.c
index 8f6a1afa1..6ec5d9191 100644
--- a/src/economy.c
+++ b/src/economy.c
@@ -180,15 +180,6 @@ static void expandorders(region * r, request * requests)
 
 /* ------------------------------------------------------------- */
 
-static void change_level(unit * u, skill_t sk, int bylevel)
-{
-    skill *sv = unit_skill(u, sk);
-    assert(bylevel > 0);
-    if (sv == 0)
-        sv = add_skill(u, sk);
-    sk_set(sv, sv->level + bylevel);
-}
-
 typedef struct recruitment {
     struct recruitment *next;
     faction *f;
@@ -258,10 +249,6 @@ void add_recruits(unit * u, int number, int wanted)
         strlcat(equipment, "_unit", sizeof(equipment));
         equip_unit(unew, get_equipment(equipment));
 
-        if (u_race(unew)->ec_flags & ECF_REC_HORSES) {
-            change_level(unew, SK_RIDING, 1);
-        }
-
         if (unew != u) {
             transfermen(unew, u, unew->number);
             remove_unit(&r->units, unew);
@@ -278,24 +265,6 @@ static int any_recruiters(const struct race *rc, int qty)
     return (int)(qty * 2 * rc->recruit_multi);
 }
 
-/*static int peasant_recruiters(const struct race *rc, int qty)
-{
-if (rc->ec_flags & ECF_REC_ETHEREAL)
-return -1;
-if (rc->ec_flags & ECF_REC_HORSES)
-return -1;
-return (int)(qty * 2 * rc->recruit_multi);
-}*/
-
-static int horse_recruiters(const struct race *rc, int qty)
-{
-    if (rc->ec_flags & ECF_REC_ETHEREAL)
-        return -1;
-    if (rc->ec_flags & ECF_REC_HORSES)
-        return (int)(qty * 2.0 * rc->recruit_multi);
-    return -1;
-}
-
 static int do_recruiting(recruitment * recruits, int available)
 {
     recruitment *rec;
@@ -407,17 +376,6 @@ static void expandrecruit(region * r, request * recruitorders)
 
     int orc_total = 0;
 
-    /* centaurs: */
-    recruits = select_recruitment(&recruitorders, horse_recruiters, &orc_total);
-    if (recruits) {
-        int recruited, horses = rhorses(r) * 2;
-        if (orc_total < horses)
-            horses = orc_total;
-        recruited = do_recruiting(recruits, horses);
-        rsethorses(r, (horses - recruited) / 2);
-        free_recruitments(recruits);
-    }
-
     /* peasant limited: */
     recruits = select_recruitment(&recruitorders, any_recruiters, &orc_total);
     if (recruits) {
@@ -539,7 +497,7 @@ static void recruit(unit * u, struct order *ord, request ** recruitorders)
         return;
     }
 
-    if (!(rc->ec_flags & ECF_REC_HORSES) && fval(r, RF_ORCIFIED)) {
+    if (fval(r, RF_ORCIFIED)) {
         if (rc != get_race(RC_ORC)) {
             cmistake(u, ord, 238, MSG_EVENT);
             return;
diff --git a/src/kernel/config.c b/src/kernel/config.c
index ebfe13833..7c58d7766 100644
--- a/src/kernel/config.c
+++ b/src/kernel/config.c
@@ -70,7 +70,6 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <util/rand.h>
 #include <util/rng.h>
 #include <util/translation.h>
-#include <util/unicode.h>
 #include <util/umlaut.h>
 #include <util/xml.h>
 
diff --git a/src/kernel/curse.c b/src/kernel/curse.c
index ac2e917a7..3ecf48899 100644
--- a/src/kernel/curse.c
+++ b/src/kernel/curse.c
@@ -522,6 +522,24 @@ static void set_cursedmen(curse * c, int cursedmen)
     }
 }
 
+static int newcurseid(void) {
+    int random_no;
+    int start_random_no;
+    random_no = 1 + (rng_int() % MAX_UNIT_NR);
+    start_random_no = random_no;
+
+    while (findcurse(random_no)) {
+        random_no++;
+        if (random_no == MAX_UNIT_NR + 1) {
+            random_no = 1;
+        }
+        if (random_no == start_random_no) {
+            random_no = (int)MAX_UNIT_NR + 1;
+        }
+    }
+    return random_no;
+}
+
 /* ------------------------------------------------------------- */
 /* Legt eine neue Verzauberung an. Sollte es schon einen Zauber
  * dieses Typs geben, gibt es den bestehenden zurück.
@@ -543,7 +561,7 @@ static curse *make_curse(unit * mage, attrib ** ap, const curse_type * ct,
     c->effect = effect;
     c->magician = mage;
 
-    c->no = newunitid();
+    c->no = newcurseid();
     chash(c);
 
     switch (c->type->typ) {
diff --git a/src/kernel/curse.h b/src/kernel/curse.h
index a1518bbdd..0de1211c7 100644
--- a/src/kernel/curse.h
+++ b/src/kernel/curse.h
@@ -280,7 +280,6 @@ extern "C" {
      * */
     struct curse *get_curse(struct attrib *ap, const curse_type * ctype);
 
-    int find_cursebyname(const char *c);
     const curse_type *ct_find(const char *c);
     bool ct_changed(int *cache);
     void ct_register(const curse_type *);
diff --git a/src/kernel/faction.c b/src/kernel/faction.c
index 0ccf62f52..774a6aec8 100755
--- a/src/kernel/faction.c
+++ b/src/kernel/faction.c
@@ -49,7 +49,6 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <util/resolve.h>
 #include <util/rng.h>
 #include <util/variant.h>
-#include <util/unicode.h>
 
 #include <attributes/otherfaction.h>
 
@@ -387,19 +386,14 @@ void destroyfaction(faction ** fp)
                 const race *rc = u_race(u);
                 int m = rmoney(r);
 
+                /* Personen gehen nur an die Bauern, wenn sie auch von dort
+                 * stammen */
                 if ((rc->ec_flags & ECF_REC_ETHEREAL) == 0) {
                     int p = rpeasants(u->region);
                     int h = rhorses(u->region);
                     item *itm;
 
-                    /* Personen gehen nur an die Bauern, wenn sie auch von dort
-                     * stammen */
-                    if (rc->ec_flags & ECF_REC_HORSES) {  /* Zentauren an die Pferde */
-                        h += u->number;
-                    }
-                    else {              /* Orks zählen nur zur Hälfte */
-                        p += (int)(u->number * rc->recruit_multi);
-                    }
+                    p += (int)(u->number * rc->recruit_multi);
                     for (itm = u->items; itm; itm = itm->next) {
                         if (itm->type->flags & ITF_ANIMAL) {
                             h += itm->number;
diff --git a/src/kernel/race.h b/src/kernel/race.h
index 214f2738d..dc3becabb 100644
--- a/src/kernel/race.h
+++ b/src/kernel/race.h
@@ -217,7 +217,6 @@ extern "C" {
 #define GIVEPERSON     (1<<2)   /* übergibt Personen */
 #define GIVEUNIT       (1<<3)   /* Einheiten an andere Partei übergeben */
 #define GETITEM        (1<<4)   /* nimmt Gegenstände an */
-#define ECF_REC_HORSES     (1<<6)       /* Rekrutiert aus Pferden */
 #define ECF_REC_ETHEREAL   (1<<7)       /* Rekrutiert aus dem Nichts */
 #define ECF_REC_UNLIMITED  (1<<8)       /* Rekrutiert ohne Limit */
 
diff --git a/src/kernel/save.c b/src/kernel/save.c
index 34a408113..2373d60a0 100644
--- a/src/kernel/save.c
+++ b/src/kernel/save.c
@@ -69,7 +69,6 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <util/resolve.h>
 #include <util/rng.h>
 #include <util/umlaut.h>
-#include <util/unicode.h>
 
 #include <quicklist.h>
 #include <stream.h>
diff --git a/src/kernel/unit.c b/src/kernel/unit.c
index ab3bd294c..201153663 100644
--- a/src/kernel/unit.c
+++ b/src/kernel/unit.c
@@ -1084,15 +1084,9 @@ void transfermen(unit * u, unit * dst, int n)
     else if (r->land) {
         if ((u_race(u)->ec_flags & ECF_REC_ETHEREAL) == 0) {
             const race *rc = u_race(u);
-            if (rc->ec_flags & ECF_REC_HORSES) {      /* Zentauren an die Pferde */
-                int h = rhorses(r) + n;
-                rsethorses(r, h);
-            }
-            else {
-                int p = rpeasants(r);
-                p += (int)(n * rc->recruit_multi);
-                rsetpeasants(r, p);
-            }
+            int p = rpeasants(r);
+            p += (int)(n * rc->recruit_multi);
+            rsetpeasants(r, p);
         }
     }
 }
@@ -1437,6 +1431,26 @@ void free_unit(unit * u)
     }
 }
 
+static int newunitid(void)
+{
+    int random_unit_no;
+    int start_random_no;
+    random_unit_no = 1 + (rng_int() % MAX_UNIT_NR);
+    start_random_no = random_unit_no;
+
+    while (ufindhash(random_unit_no) || dfindhash(random_unit_no)
+        || forbiddenid(random_unit_no)) {
+        random_unit_no++;
+        if (random_unit_no == MAX_UNIT_NR + 1) {
+            random_unit_no = 1;
+        }
+        if (random_unit_no == start_random_no) {
+            random_unit_no = (int)MAX_UNIT_NR + 1;
+        }
+    }
+    return random_unit_no;
+}
+
 static void createunitid(unit * u, int id)
 {
     if (id <= 0 || id > MAX_UNIT_NR || ufindhash(id) || dfindhash(id)
@@ -1699,6 +1713,7 @@ int unit_getcapacity(const unit * u)
 }
 
 void renumber_unit(unit *u, int no) {
+    if (no == 0) no = newunitid();
     uunhash(u);
     if (!ualias(u)) {
         attrib *a = a_add(&u->attribs, a_new(&at_alias));
@@ -1929,27 +1944,6 @@ bool unit_can_study(const unit *u) {
     return !((u_race(u)->flags & RCF_NOLEARN) || fval(u, UFL_WERE));
 }
 
-/* ID's für Einheiten und Zauber */
-int newunitid(void)
-{
-    int random_unit_no;
-    int start_random_no;
-    random_unit_no = 1 + (rng_int() % MAX_UNIT_NR);
-    start_random_no = random_unit_no;
-
-    while (ufindhash(random_unit_no) || dfindhash(random_unit_no)
-        || forbiddenid(random_unit_no)) {
-        random_unit_no++;
-        if (random_unit_no == MAX_UNIT_NR + 1) {
-            random_unit_no = 1;
-        }
-        if (random_unit_no == start_random_no) {
-            random_unit_no = (int)MAX_UNIT_NR + 1;
-        }
-    }
-    return random_unit_no;
-}
-
 static int read_newunitid(const faction * f, const region * r)
 {
     int n;
diff --git a/src/kernel/unit.h b/src/kernel/unit.h
index 32e48a950..a360321a2 100644
--- a/src/kernel/unit.h
+++ b/src/kernel/unit.h
@@ -258,7 +258,6 @@ extern "C" {
 #define GET_PEASANTS 2
 
     int getunit(const struct region * r, const struct faction * f, struct unit **uresult);
-    int newunitid(void);
     int read_unitid(const struct faction *f, const struct region *r);
 
     void setstatus(struct unit *u, int status);
diff --git a/src/kernel/xmlreader.c b/src/kernel/xmlreader.c
index 894647f89..e022effaf 100644
--- a/src/kernel/xmlreader.c
+++ b/src/kernel/xmlreader.c
@@ -1730,8 +1730,6 @@ static int parse_races(xmlDocPtr doc)
             rc->ec_flags |= GIVEUNIT;
         if (xml_bvalue(node, "getitem", false))
             rc->ec_flags |= GETITEM;
-        if (xml_bvalue(node, "recruithorses", false))
-            rc->ec_flags |= ECF_REC_HORSES;
         if (xml_bvalue(node, "recruitethereal", false))
             rc->ec_flags |= ECF_REC_ETHEREAL;
         if (xml_bvalue(node, "recruitunlimited", false))
diff --git a/src/laws.c b/src/laws.c
index e243378dd..623a163d6 100755
--- a/src/laws.c
+++ b/src/laws.c
@@ -2916,7 +2916,7 @@ int renumber_cmd(unit * u, order * ord)
 {
     char token[128];
     const char *s;
-    int i;
+    int i = 0;
     faction *f = u->faction;
 
     init_order(ord);
@@ -2936,10 +2936,7 @@ int renumber_cmd(unit * u, order * ord)
 
     case P_UNIT:
         s = gettoken(token, sizeof(token));
-        if (s == NULL || *s == 0) {
-            i = newunitid();
-        }
-        else {
+        if (s && *s) {
             i = atoi36((const char *)s);
             if (i <= 0 || i > MAX_UNIT_NR) {
                 cmistake(u, ord, 114, MSG_EVENT);
diff --git a/src/lighthouse.c b/src/lighthouse.c
index 96b42b333..dd1183558 100644
--- a/src/lighthouse.c
+++ b/src/lighthouse.c
@@ -73,13 +73,11 @@ int lighthouse_range(const building * b, const faction * f)
             region *r = b->region;
             int c = 0;
             int cap = buildingcapacity(b);
-            unit *u;
+            unit *u, *uown = building_owner(b);
 
             for (u = r->units; u; u = u->next) {
-                if (u->building == b || u == building_owner(b)) {
-                    if (u->building == b) {
-                        c += u->number;
-                    }
+                if (u->building == b || u == uown) {
+                    c += u->number;
                     if (c > cap) {
                         break;
                     }
diff --git a/src/reports.c b/src/reports.c
index dc0edf1b3..5a7f29a10 100644
--- a/src/reports.c
+++ b/src/reports.c
@@ -1170,11 +1170,9 @@ static void add_seen_nb(faction *f, region *r, seen_mode mode) {
 
 /** mark all regions seen by the lighthouse.
  */
-static void prepare_lighthouse(building * b, report_context *ctx)
+static void prepare_lighthouse(faction *f, region *r, int range)
 {
-    faction *f = ctx->f;
-    int range = lighthouse_range(b, f);
-    quicklist *ql, *rlist = get_regions_distance(b->region, range);
+    quicklist *ql, *rlist = get_regions_distance(r, range);
     int qi;
 
     for (ql = rlist, qi = 0; ql; ql_advance(&ql, &qi, 1)) {
@@ -1316,7 +1314,6 @@ static void cb_add_seen(region *r, unit *u, void *cbdata) {
 void prepare_report(report_context *ctx, faction *f)
 {
     region *r;
-    building *b;
     static int config;
     static bool rule_region_owners;
     const struct building_type *bt_lighthouse = bt_find("lighthouse");
@@ -1334,34 +1331,36 @@ void prepare_report(report_context *ctx, faction *f)
     ctx->last = lastregion(f);
 
     for (r = ctx->first; r!=ctx->last; r = r->next) {
+        int range = 0;
         unit *u;
+        if (fval(r, RF_LIGHTHOUSE) && bt_lighthouse) {
+            if (rule_region_owners && f == region_get_owner(r)) {
+                /* region owners get the report from lighthouses */
+                building *b;
 
-        if (fval(r, RF_LIGHTHOUSE)) {
-            /* region owners get the report from lighthouses */
-            if (rule_region_owners && bt_lighthouse) {
-                for (b = rbuildings(r); b; b = b->next) {
-                    if (b && b->type == bt_lighthouse) {
-                        u = building_owner(b);
-                        if (u && u->faction==f) {
-                            prepare_lighthouse(b, ctx);
-                            add_seen_nb(f, r, seen_unit);
-                        }
+                for (b = r->buildings; b; b = b->next) {
+                    if (b->type == bt_lighthouse) {
+                        int br = lighthouse_range(b, NULL);
+                        if (br > range) range = br;
                     }
                 }
             }
-
         }
         for (u = r->units; u; u = u->next) {
-            if (u->faction==f) {
+            if (u->faction == f) {
                 add_seen_nb(f, r, seen_unit);
-                if (fval(r, RF_LIGHTHOUSE)) {
+                if (fval(r, RF_LIGHTHOUSE) && bt_lighthouse) {
                     if (u->building && u->building->type == bt_lighthouse && inside_building(u)) {
-                        /* we are in a lighthouse. add the regions we can see from here! */
-                        prepare_lighthouse(u->building, ctx);
+                        int br = lighthouse_range(u->building, f);
+                        if (br > range) range = br;
                     }
                 }
             }
         }
+        if (range > 0) {
+            /* we are in at least one lighthouse. add the regions we can see from here! */
+            prepare_lighthouse(f, r, range);
+        }
 
         if (fval(r, RF_TRAVELUNIT) && r->seen.mode<seen_travel) {
             travelthru_map(r, cb_add_seen, f);
diff --git a/src/reports.test.c b/src/reports.test.c
index d9b427ff2..bc89bb4b4 100644
--- a/src/reports.test.c
+++ b/src/reports.test.c
@@ -7,6 +7,7 @@
 #include "travelthru.h"
 #include "keyword.h"
 
+#include <kernel/config.h>
 #include <kernel/building.h>
 #include <kernel/faction.h>
 #include <kernel/item.h>
@@ -344,6 +345,43 @@ static void test_prepare_lighthouse(CuTest *tc) {
     test_cleanup();
 }
 
+static void test_prepare_lighthouse_owners(CuTest *tc) {
+    report_context ctx;
+    faction *f;
+    region *r1, *r2, *r3;
+    unit *u;
+    building *b;
+    building_type *btype;
+    const struct terrain_type *t_ocean, *t_plain;
+
+    test_setup();
+    config_set("rules.region_owner_pay_building", "lighthouse");
+    config_set("rules.region_owners", "1");
+    t_ocean = test_create_terrain("ocean", SEA_REGION);
+    t_plain = test_create_terrain("plain", LAND_REGION);
+    f = test_create_faction(0);
+    r1 = test_create_region(0, 0, t_plain);
+    r2 = test_create_region(1, 0, t_ocean);
+    r3 = test_create_region(2, 0, t_ocean);
+    btype = test_create_buildingtype("lighthouse");
+    b = test_create_building(r1, btype);
+    b->flags |= BLD_MAINTAINED;
+    b->size = 10;
+    update_lighthouse(b);
+    u = test_create_unit(f, r1);
+    u = test_create_unit(test_create_faction(0), r1);
+    u->building = b;
+    set_level(u, SK_PERCEPTION, 3);
+    region_set_owner(b->region, f, 0);
+    prepare_report(&ctx, f);
+    CuAssertPtrEquals(tc, r1, ctx.first);
+    CuAssertPtrEquals(tc, NULL, ctx.last);
+    CuAssertIntEquals(tc, seen_unit, r1->seen.mode);
+    CuAssertIntEquals(tc, seen_lighthouse, r2->seen.mode);
+    CuAssertIntEquals(tc, seen_neighbour, r3->seen.mode);
+    test_cleanup();
+}
+
 static void test_prepare_report(CuTest *tc) {
     report_context ctx;
     faction *f;
@@ -432,6 +470,7 @@ CuSuite *get_reports_suite(void)
     SUITE_ADD_TEST(suite, test_seen_neighbours);
     SUITE_ADD_TEST(suite, test_seen_travelthru);
     SUITE_ADD_TEST(suite, test_prepare_lighthouse);
+    SUITE_ADD_TEST(suite, test_prepare_lighthouse_owners);
     SUITE_ADD_TEST(suite, test_prepare_lighthouse_capacity);
     SUITE_ADD_TEST(suite, test_prepare_travelthru);
     SUITE_ADD_TEST(suite, test_reorder_units);
diff --git a/src/sqlite.c b/src/sqlite.c
index 37535c9d1..42bfdb3b5 100644
--- a/src/sqlite.c
+++ b/src/sqlite.c
@@ -3,7 +3,6 @@
 #include <kernel/faction.h>
 #include <kernel/race.h>
 #include <util/language.h>
-#include <util/unicode.h>
 #include <util/log.h>
 #include <util/base36.h>
 #include <util/log.h>
diff --git a/src/xmlreport.c b/src/xmlreport.c
index 43d7cc55b..fd2b5e464 100644
--- a/src/xmlreport.c
+++ b/src/xmlreport.c
@@ -61,7 +61,6 @@ without prior permission by the authors of Eressea.
 #include <util/language.h>
 #include <util/message.h>
 #include <quicklist.h>
-#include <util/unicode.h>
 #include <util/xml.h>
 
 #ifdef USE_LIBXML2