diff --git a/src/subsystems/entity_subsystem.rs b/src/subsystems/entity_subsystem.rs
index 11723b0..b8b661f 100644
--- a/src/subsystems/entity_subsystem.rs
+++ b/src/subsystems/entity_subsystem.rs
@@ -1,15 +1,16 @@
 use std::sync::{mpsc, Arc};
-use std::io::Cursor;
 use std::collections::HashMap;
 
 use crate::server::IpcMessage;
 
 use prost::Message;
 
+use proto;
+use proto::{PacketId, CombatTypeArgument, ForwardType};
+
 use packet_processor_macro::*;
 #[macro_use]
 use packet_processor::*;
-use serde::__serialize_unimplemented;
 
 #[packet_processor(
 CombatInvocationsNotify,
@@ -31,6 +32,86 @@ impl EntitySubsystem {
     }
 
     fn process_combat_invocations(&self, user_id: u32, metadata: &proto::PacketHead, notify: &proto::CombatInvocationsNotify) {
-        unimplemented!()
+        for invoke in notify.invoke_list.iter() {
+            self.handle_invoke(user_id, metadata, invoke);
+            self.forward_invoke(user_id, metadata, invoke);
+        }
+    }
+
+    /*
+        Invocation handlers
+     */
+    fn handle_invoke(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::CombatInvokeEntry) {
+        match CombatTypeArgument::from_i32(invoke.argument_type).unwrap() { // Panics in case of unknown (undescribed in protobuf file) argument type
+            CombatTypeArgument::CombatNone                       => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatEvtBeingHit                => self.ih_being_hit(user_id, metadata, &EasilyUnpackable::from(&invoke.combat_data)),
+            CombatTypeArgument::CombatAnimatorStateChanged       => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatFaceToDir                  => self.ih_face_to_dir(user_id, metadata, &EasilyUnpackable::from(&invoke.combat_data)),
+            CombatTypeArgument::CombatSetAttackTarget            => self.ih_set_attack_target(user_id, metadata, &EasilyUnpackable::from(&invoke.combat_data)),
+            CombatTypeArgument::CombatRushMove                   => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatAnimatorParameterChanged   => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::EntityMove                       => self.ih_entity_move(user_id, metadata, &EasilyUnpackable::from(&invoke.combat_data)),
+            CombatTypeArgument::SyncEntityPosition               => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatSteerMotionInfo            => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatForceSetPosInfo            => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatCompensatePosDiff          => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatMonsterDoBlink             => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatFixedRushMove              => self.ih_default(user_id, metadata, invoke),
+            CombatTypeArgument::CombatSyncTransform              => self.ih_default(user_id, metadata, invoke),
+            _ => panic!("Unhandled CombatTypeArgument {}", invoke.argument_type), // Panics in case of unknown (unhandled) argument type
+        }
+    }
+
+    fn ih_default(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::CombatInvokeEntry) {
+        // TODO: this handler is just a stub!
+        println!("Unhandled CIN invoke: {:?}", invoke);
+    }
+
+    fn ih_entity_move(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::EntityMoveInfo) {
+
+    }
+
+    fn ih_set_attack_target(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::EvtSetAttackTargetInfo) {
+
+    }
+
+    fn ih_face_to_dir(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::EvtFaceToDirInfo) {
+
+    }
+
+    fn ih_being_hit(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::EvtBeingHitInfo) {
+
+    }
+
+    /*
+        Forward handlers
+     */
+
+    // Main function
+    fn forward_invoke(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::CombatInvokeEntry) {
+        match ForwardType::from_i32(invoke.forward_type).unwrap() { // Panics in case of unknown (undescribed in protobuf file) forward type
+            ForwardType::ForwardLocal                 => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToAll                 => self.fw_to_all(user_id, metadata, invoke),
+            ForwardType::ForwardToAllExceptCur        => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToHost                => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToAllGuest            => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToPeer                => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToPeers               => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardOnlyServer            => self.fw_default(user_id, metadata, invoke),
+            ForwardType::ForwardToAllExistExceptCur   => self.fw_default(user_id, metadata, invoke),
+            _ => panic!("Unhandled ForwardType {}", invoke.forward_type), // Panics in case of unknown (unhandled) forward type
+        }
+    }
+
+    fn fw_default(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::CombatInvokeEntry) {
+        // TODO: this handler is just a stub!
+        println!("Unhandled CIN forward: {:?}", invoke);
+    }
+
+    fn fw_to_all(&self, user_id: u32, metadata: &proto::PacketHead, invoke: &proto::CombatInvokeEntry) {
+        // TODO: this handler sends data only back to the user itself for now!
+        build_and_send!(self, user_id, metadata, CombatInvocationsNotify {
+            invoke_list: vec![invoke.clone()],
+        });
     }
 }
\ No newline at end of file