diff --git a/Assets/Scripts/Ability.cs b/Assets/Scripts/Ability.cs
index 96a3f95..6ae1c51 100644
--- a/Assets/Scripts/Ability.cs
+++ b/Assets/Scripts/Ability.cs
@@ -7,19 +7,19 @@ public class Ability : ScriptableObject
     public new string name;
     public string description;
 
-    public virtual void OnSpawn(Unit unit) { }
+    public virtual void OnPlaceUnit(Unit unit) { }
     public virtual void OnBeginRound(Unit unit) { }
     public virtual void OnEndRound(Unit unit) { }
     
-    public virtual void OnBeginMove(Unit unit) { }
+    public virtual void OnBeginMovePhase(Unit unit) { }
     public virtual void OnMove(Unit unit, int travelDistance) { }
-    public virtual void OnEndMove(Unit unit) { }
+    public virtual void OnEndMovePhase(Unit unit) { }
     
-    public virtual void OnBeginAttackPhrase(Unit unit) { }
+    public virtual void OnBeginAttackPhase(Unit unit) { }
     public virtual void OnBeginAttack(Unit unit, List<Unit> targets) { }
     public virtual void OnAttack(Unit unit, List<Unit> targets) { }
     public virtual void OnEndAttack(Unit unit, List<Unit> targets) { }
-    public virtual void OnEndAttackPhrase(Unit unit) { }
+    public virtual void OnEndAttackPhase(Unit unit) { }
     public virtual void OnExecute(Unit unit, Unit target) { }
     public virtual void OnAllyDeath(Unit unit) { }
     public virtual void OnEnemyDeath(Unit unit) { }
@@ -37,5 +37,5 @@ public class Ability : ScriptableObject
     public virtual void OnEquippingArmor(Unit unit, int armorAmount) { }
     public virtual void OnDiscard(Unit unit) { }
 
-    public virtual void OnCasting(Unit unit) { }
+    public virtual void OnCastStragedy(List<Unit> targets) { }
 }
diff --git a/Assets/Scripts/CombatManager.cs b/Assets/Scripts/CombatManager.cs
new file mode 100644
index 0000000..20d63ce
--- /dev/null
+++ b/Assets/Scripts/CombatManager.cs
@@ -0,0 +1,162 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+// Left is Player, right is enemy.
+public enum Side { left = 1, right = -1 }
+
+public class CombatManager : MonoBehaviour
+{
+    [SerializeField] private List<Unit> leftSideUnits = new List<Unit>();
+    [SerializeField] private List<Unit> rightSideUnits = new List<Unit>();
+    [SerializeField] private CellMap cellMap;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        // hack
+        cellMap = FindObjectOfType<CellMap>();
+
+        foreach (var unit in rightSideUnits)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnPlaceUnit(unit);
+            }
+        }
+
+        foreach (var unit in rightSideUnits)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnEnterBattleGround(unit);
+            }
+        }
+    }
+
+    List<Unit> QueryTargets(Unit attacker)
+    {
+        // TO DO:
+        return new List<Unit>();
+    }
+
+    // Called once before drawing cards
+    void BeginFight()
+    {
+
+    }
+
+    void BeginRound(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnBeginRound(unit);
+            }
+        }
+    }
+
+    void BeginMovePhase(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnBeginMovePhase(unit);
+            }
+        }
+    }
+
+    void EndMovePhase(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnEndMovePhase(unit);
+            }
+        }
+    }
+
+    void BeginAttackPhase(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnBeginAttackPhase(unit);
+            }
+        }
+    }
+
+    void UnitAttack(Unit unit, List<Unit> targets)
+    {
+        foreach (var ability in unit.Abilities)
+        {
+            ability.OnBeginAttack(unit, targets);
+        }
+
+        foreach (var ability in unit.Abilities)
+        {
+            ability.OnAttack(unit, targets);
+        }
+
+        foreach (var ability in unit.Abilities)
+        {
+            ability.OnEndAttack(unit, targets);
+        }
+
+        foreach (var target in targets)
+        {
+            foreach (var ability in target.Abilities)
+            {
+                ability.OnCounterAttack(target, unit);
+            }
+        }
+    }
+
+    void Attack(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        
+        foreach (var unit in units)
+        {
+            UnitAttack(unit, QueryTargets(unit));
+        }
+    }
+
+    void EndAttackPhase(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnEndAttackPhase(unit);
+            }
+        }
+    }
+
+    void EndRound(Side side)
+    {
+        List<Unit> units = side == Side.left ? leftSideUnits : rightSideUnits;
+        foreach (var unit in units)
+        {
+            foreach (var ability in unit.Abilities)
+            {
+                ability.OnEndRound(unit);
+            }
+        }
+    }
+
+    // Called once after result
+    void EndFight()
+    {
+
+    }
+}
diff --git a/Assets/Scripts/CombatManager.cs.meta b/Assets/Scripts/CombatManager.cs.meta
new file mode 100644
index 0000000..c0520dc
--- /dev/null
+++ b/Assets/Scripts/CombatManager.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ab8c50f6a5fd9be488ffeb604ccbc9fc
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/Unit.cs b/Assets/Scripts/Unit.cs
index a76bc6b..e2f5392 100644
--- a/Assets/Scripts/Unit.cs
+++ b/Assets/Scripts/Unit.cs
@@ -7,9 +7,6 @@ using TMPro;
 
 public enum CurrentCommand { defend, moveForward, retreat }
 
-// Left is Player, Enemy is right.
-public enum Side { left = 1, right = -1 }
-
 public class Unit : MonoBehaviour
 {
     public string unitName;
@@ -34,6 +31,11 @@ public class Unit : MonoBehaviour
 
     [SerializeField]
     private List<Ability> abilities;
+    public List<Ability> Abilities
+    {
+        get { return abilities; }
+        set { abilities = value; }
+    }
 
     [SerializeField]
     private int meleeAttackRange = 1;
@@ -96,6 +98,7 @@ public class Unit : MonoBehaviour
         currentDefense = basicMaxDefense;
         cardTags = baseData.tags.ToList();
         unitClasses = baseData.unitClasses.ToList();
+        abilities = baseData.abilities.ToList();
 
         foreach (var unitClass in unitClasses)
         {
@@ -165,39 +168,34 @@ public class Unit : MonoBehaviour
         {
             return;
         }
-        foreach (var tag in cardTags)
+        // hack
+        if (rangedAttackRange > 0)
         {
-            if (tag.name == "Archer")
+            for (int i = 0; i < rangedAttackRange; ++i)
             {
-                for (int i = 0; i < meleeAttackRange; ++i)
+                int attackXPos = standingCell.xPos + (i + 1) * (int)side;
+                if (attackXPos >= cellMap.column || attackXPos < 0)
                 {
-                    int attackXPos = standingCell.xPos + (i + 1) * (int)side;
-                    if (attackXPos >= cellMap.column || attackXPos < 0)
+                    // Attack Camp
+                    currentCommand = CurrentCommand.defend;
+                    break;
+                }
+
+                Cell nextCellInRange = cellMap.GetCell(attackXPos, standingCell.yPos);
+                Unit targetUnit = nextCellInRange.standingUnit;
+                if (targetUnit)
+                {
+                    if (targetUnit.side != side)
                     {
-                        // Attack Camp
+                        // Add units to attack list.
                         currentCommand = CurrentCommand.defend;
                         break;
                     }
-
-                    Cell nextCellInRange = cellMap.GetCell(attackXPos, standingCell.yPos);
-                    Unit targetUnit = nextCellInRange.standingUnit;
-                    if (targetUnit)
-                    {
-                        if (targetUnit.side != side)
-                        {
-                            // Add units to attack list.
-                            currentCommand = CurrentCommand.defend;
-                            break;
-                        }
-                    }
-
-                    currentCommand = CurrentCommand.moveForward;
                 }
-                break;
+
+                currentCommand = CurrentCommand.moveForward;
             }
         }
-
-       
         //Debug.Log("Call MoveAction().");
         switch (currentCommand)
         {
@@ -265,17 +263,10 @@ public class Unit : MonoBehaviour
 
     public void AttackAction()
     {
-        // Check Attack Range
-        if (inDogFight(this))
+        // Check if this unit is ranged unit
+        if (rangedAttackRange > 0)
         {
-            foreach (var tag in cardTags)
-            {
-                if (tag.name == "Archer")
-                {
-                    // Archer can't dog fight.
-                    return;
-                }
-            }
+            return;
         }
 
         List<Unit> unitsInRange = new List<Unit>();
diff --git a/Assets/Scripts/UnitManager.cs b/Assets/Scripts/UnitManager.cs
index c0f3258..04213f8 100644
--- a/Assets/Scripts/UnitManager.cs
+++ b/Assets/Scripts/UnitManager.cs
@@ -25,12 +25,6 @@ public class UnitManager : MonoBehaviour
         }
     }
 
-    // Update is called once per frame
-    void Update()
-    {
-        
-    }
-
     public void handleDiedUnit(Unit unit)
     {
         if (unit.side == Side.left)
@@ -39,7 +33,7 @@ public class UnitManager : MonoBehaviour
         }
         else if (unit.side == Side.right)
         {
-            leftSideUnits.Remove(unit);
+            rightSideUnits.Remove(unit);
         }
     }