Attempt to define a cattle herd unit

units.ruleset

@@ -59,6 +59,8 @@ class_flags =
     _("AttFromNonNative"), _("Can launch attack from non-native tiles.")
     _("Missile")
     _("CanPillage")
+    _("CanGraze"), _("Can graze the land to reproduce.")
+    _("CanSpawnWarrior"), _("Can spawn a warrior at the cost of some health.")
     _("CanFortify"),
     ; /* xgettext:no-c-format */
                      _("Gets a 50% defensive bonus while in cities.")
@@ -164,6 +166,13 @@ flags         = "TerrainSpeed", "DamageSlows", "CanOccupyCity", "BuildAnywhere",
                 "TerrainDefense", "Airliftable", "NonNatBombardTgt",
                 "Barracks", "Ground"
 
+[unitclass_herd]
+; /* TRANS: Unit class: used adjectivally */
+name          =_("?unitclass:Herd")
+min_speed     = 1
+hp_loss_pct   = 0
+flags         = "CanGraze", "CanSpawnWarrior", "Ground"
+
 [unitclass_land_small]
 ; /* TRANS: Unit class: used adjectivally */
 name          = _("?unitclass:Small Land")
@@ -662,6 +671,39 @@ sufficient existing land). See the Terrain Alterations section \
 for more details.\
 ")
 
+[unit_cattle_herd]
+name          = _("Cattle herd")
+class         = "Herd"
+;reqs
+obsolete_by   = "None"
+graphic       = "u.cattle_herd"
+graphic_alt   = "-"
+sound_move    = "m_cattle_herd"
+sound_move_alt = "m_generic"
+sound_fight   = "f_generic"
+sound_fight_alt = "f_generic"
+build_cost    = 10
+pop_cost      = 1
+attack        = 0
+defense       = 1
+hitpoints     = 50
+firepower     = 0
+move_rate     = 1
+vision_radius_sq = 2
+transport_cap = 0
+fuel          = 2 ; Fuel is actually grass
+uk_happy      = 1
+uk_shield     = 1
+uk_food       = 1
+uk_gold       = 1
+tp_defense    = "Blocked"
+flags         = "Herd"
+roles         = ""
+helptext      = _("\
+A herd of cattle, the cornerstone of nomadic empires.\
+")
+
+
 [unit_warriors]
 name          = _("Warriors")
 class         = "Land"