diff --git a/module/Core/Privilege.cpp b/module/Core/Privilege.cpp
index c8c6fd99..fe74306f 100644
--- a/module/Core/Privilege.cpp
+++ b/module/Core/Privilege.cpp
@@ -342,6 +342,8 @@ bool PvManager::HaveUnitWithTag(StackStrF & tag)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveEntryWithID(SQInteger id)
 {
+    ModifyEntries();
+
     // Remove this entry from the units
     for (const auto & u : m_Units)
     {
@@ -359,6 +361,8 @@ void PvManager::RemoveEntryWithID(SQInteger id)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveEntryWithTag(StackStrF & tag)
 {
+    ModifyEntries();
+
     PvEntry & e = *GetValidEntryWithTag(tag);
     // Remove this entry from the units
     for (const auto & u : m_Units)
@@ -383,6 +387,8 @@ void PvManager::RemoveEntryWithTag(StackStrF & tag)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveClassWithID(SqPvClass & sub, SQInteger id)
 {
+    ModifyClasses();
+
     PvClass::Ref cls = sub.mI.lock();
     // Remove this entry from units
     for (const auto & u : m_Units)
@@ -409,6 +415,8 @@ void PvManager::RemoveClassWithID(SqPvClass & sub, SQInteger id)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveClassWithTag(SqPvClass & sub, StackStrF & tag)
 {
+    ModifyClasses();
+
     PvClass::Ref cls = sub.mI.lock();
     // Remove this class from units
     for (const auto & u : m_Units)
@@ -441,6 +449,8 @@ void PvManager::RemoveClassWithTag(SqPvClass & sub, StackStrF & tag)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveUnitWithID(SQInteger id)
 {
+    ModifyUnits();
+
     // Remove this class from classes
     for (const auto & c : m_Classes)
     {
@@ -453,6 +463,8 @@ void PvManager::RemoveUnitWithID(SQInteger id)
 // ------------------------------------------------------------------------------------------------
 void PvManager::RemoveUnitWithTag(StackStrF & tag)
 {
+    ModifyUnits();
+
     PvUnit & u = *GetValidUnitWithTag(tag);
     // Remove this class from classes
     for (const auto & c : m_Classes)
@@ -469,6 +481,42 @@ void PvManager::RemoveUnitWithTag(StackStrF & tag)
     }
 }
 
+// ------------------------------------------------------------------------------------------------
+void PvManager::EachEntryID(Object & ctx, Function & func)
+{
+    // Prevent any changes to entries during this operation
+    AutoAssign< bool > aag(m_LockEntries, false, true);
+    // Iterate entries and forward the ID to the callback
+    for (const auto & e : m_Entries)
+    {
+        func(ctx, e.second->mID);
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+void PvManager::EachClassID(Object & ctx, Function & func)
+{
+    // Prevent any changes to classes during this operation
+    AutoAssign< bool > aag(m_LockClasses, false, true);
+    // Iterate classes and forward the ID to the callback
+    for (const auto & c : m_Classes)
+    {
+        func(ctx, c.second->mID);
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+void PvManager::EachUnitID(Object & ctx, Function & func)
+{
+    // Prevent any changes to units during this operation
+    AutoAssign< bool > aag(m_LockUnits, false, true);
+    // Iterate units and forward the ID to the callback
+    for (const auto & u : m_Units)
+    {
+        func(ctx, u.second->mID);
+    }
+}
+
 // ------------------------------------------------------------------------------------------------
 extern void Register_Privilege_Class(HSQUIRRELVM vm, Table & ns);
 extern void Register_Privilege_Entry(HSQUIRRELVM vm, Table & ns);
@@ -523,6 +571,9 @@ void Register_Privilege(HSQUIRRELVM vm)
         .FmtFunc(_SC("RemoveEntryWithTag"), &PvManager::RemoveEntryWithTag)
         .Func(_SC("RemoveClass"), &PvManager::RemoveClassWithID)
         .FmtFunc(_SC("RemoveClassWithTag"), &PvManager::RemoveClassWithTag)
+        .FmtFunc(_SC("EachEntryID"), &PvManager::EachEntryID)
+        .FmtFunc(_SC("EachClassID"), &PvManager::EachClassID)
+        .FmtFunc(_SC("EachUnitID"), &PvManager::EachUnitID)
     );
 
     RootTable(vm).Bind(_SC("SqPrivilege"), ns);
diff --git a/module/Core/Privilege.hpp b/module/Core/Privilege.hpp
index a88c2474..5db702ec 100644
--- a/module/Core/Privilege.hpp
+++ b/module/Core/Privilege.hpp
@@ -646,6 +646,21 @@ public:
      * Remove a unit with a certain tag from this manager.
     */
     void RemoveUnitWithTag(StackStrF & tag);
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every known entry identifier.
+    */
+    void EachEntryID(Object & ctx, Function & func);
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every known class identifier.
+    */
+    void EachClassID(Object & ctx, Function & func);
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every known unit identifier.
+    */
+    void EachUnitID(Object & ctx, Function & func);
 };
 
 } // Namespace:: SqMod
diff --git a/module/Core/Privilege/Class.cpp b/module/Core/Privilege/Class.cpp
index 1b792a67..4a39753b 100644
--- a/module/Core/Privilege/Class.cpp
+++ b/module/Core/Privilege/Class.cpp
@@ -390,6 +390,30 @@ bool PvClass::HaveUnitWithTag(StackStrF & tag)
     return false;
 }
 
+// ------------------------------------------------------------------------------------------------
+void PvClass::EachEntryID(Object & ctx, Function & func)
+{
+    // In order to be safe from modifications while iterating, create a copy
+    PvStatusList list(mPrivileges);
+    // Iterate entries and forward the ID to the callback
+    for (const auto & e : list)
+    {
+        func(ctx, e.first);
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+void PvClass::EachUnitID(Object & ctx, Function & func)
+{
+    // In order to be safe from modifications while iterating, create a copy
+    PvUnit::List list(mUnits);
+    // Iterate units and forward the ID to the callback
+    for (const auto & u : list)
+    {
+        func(ctx, u.second->mID);
+    }
+}
+
 // ================================================================================================
 bool SqPvClass::Can(LightObj & obj) const
 {
@@ -462,6 +486,8 @@ void Register_Privilege_Class(HSQUIRRELVM vm, Table & ns)
         .FmtFunc(_SC("GetUnitWithTag"), &SqPvClass::GetUnitWithTag)
         .Func(_SC("HaveUnit"), &SqPvClass::HaveUnitWithID)
         .FmtFunc(_SC("HaveUnitWithTag"), &SqPvClass::HaveUnitWithTag)
+        .FmtFunc(_SC("EachEntryID"), &SqPvClass::EachEntryID)
+        .FmtFunc(_SC("EachUnitID"), &SqPvClass::EachUnitID)
     );
 }
 
diff --git a/module/Core/Privilege/Class.hpp b/module/Core/Privilege/Class.hpp
index 168aa191..b4149864 100644
--- a/module/Core/Privilege/Class.hpp
+++ b/module/Core/Privilege/Class.hpp
@@ -296,6 +296,16 @@ struct PvClass
      * See if a unit with a certain tag inherits this class.
     */
     bool HaveUnitWithTag(StackStrF & tag);
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every owned entry identifier.
+    */
+    void EachEntryID(Object & ctx, Function & func);
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every parented unit identifier.
+    */
+    void EachUnitID(Object & ctx, Function & func);
 };
 
 /* ------------------------------------------------------------------------------------------------
@@ -358,6 +368,9 @@ struct SqPvClass
     SQMOD_NODISCARD LightObj GetUnitWithTag(StackStrF & tag) const { return Valid().GetUnitWithTag(tag); }
     SQMOD_NODISCARD bool HaveUnitWithID(SQInteger id) const { return Valid().HaveUnitWithID(id); }
     SQMOD_NODISCARD bool HaveUnitWithTag(StackStrF & tag) const { return Valid().HaveUnitWithTag(tag); }
+    // --------------------------------------------------------------------------------------------
+    void EachEntryID(Object & ctx, Function & func) { return Valid().EachEntryID(ctx, func); }
+    void EachUnitID(Object & ctx, Function & func) { return Valid().EachUnitID(ctx, func); }
 };
 
 } // Namespace:: SqMod
diff --git a/module/Core/Privilege/Unit.cpp b/module/Core/Privilege/Unit.cpp
index dea307d8..69bbe130 100644
--- a/module/Core/Privilege/Unit.cpp
+++ b/module/Core/Privilege/Unit.cpp
@@ -342,6 +342,18 @@ bool PvUnit::Can(SQInteger id) const
     return false;
 }
 
+// ------------------------------------------------------------------------------------------------
+void PvUnit::EachEntryID(Object & ctx, Function & func)
+{
+    // In order to be safe from modifications while iterating, create a copy
+    PvStatusList list(mPrivileges);
+    // Iterate entries and forward the ID to the callback
+    for (const auto & e : list)
+    {
+        func(ctx, e.first);
+    }
+}
+
 // ================================================================================================
 LightObj SqPvUnit::GetClass() const
 {
@@ -429,6 +441,7 @@ void Register_Privilege_Unit(HSQUIRRELVM vm, Table & ns)
         .Func(_SC("Modify"), &SqPvUnit::ModifyPrivilegeWithID)
         .FmtFunc(_SC("ModifyWithTag"), &SqPvUnit::ModifyPrivilegeWithTag)
         .Func(_SC("RemoveAll"), &SqPvUnit::RemoveAllPrivileges)
+        .Func(_SC("EachEntryID"), &SqPvUnit::EachEntryID)
     );
 }
 
diff --git a/module/Core/Privilege/Unit.hpp b/module/Core/Privilege/Unit.hpp
index eec10d54..ea3b629e 100644
--- a/module/Core/Privilege/Unit.hpp
+++ b/module/Core/Privilege/Unit.hpp
@@ -249,6 +249,11 @@ struct PvUnit
      * Check if this unit has a certain privilege.
     */
     SQMOD_NODISCARD bool Can(SQInteger id) const;
+
+    /* --------------------------------------------------------------------------------------------
+     * Invoke a given callback with every owned entry identifier.
+    */
+    void EachEntryID(Object & ctx, Function & func);
 };
 
 /* ------------------------------------------------------------------------------------------------
@@ -304,6 +309,8 @@ struct SqPvUnit
     void ModifyPrivilegeWithID(SQInteger id, SQInteger value) { Valid().ModifyPrivilege(id, value); }
     void ModifyPrivilegeWithTag(StackStrF & tag, SQInteger value) { Valid().ModifyPrivilege(tag, value); }
     void RemoveAllPrivileges() { Valid().RemoveAllPrivileges(); }
+    // --------------------------------------------------------------------------------------------
+    void EachEntryID(Object & ctx, Function & func) { return Valid().EachEntryID(ctx, func); }
 };
 
 } // Namespace:: SqMod