Concrete object fields vs interface object fields in classes (c#)?

I want to select one of two strategies for my classes. plz see and say which of them is better and why. thx I defined several interfaces and component based procedures for soldior class but one time used concrete fields (soldior1,soldio2,..) and the other one used interface fields(soldior). Code (CSharp):

using System;
public interface IMovable {
    void Move();
}
public interface IAttackable {
    void Attack(ILivable _liveBehaviour);
}
public interface IDisplayable {
    void Display();
}
public interface ILivable {
    void Die();
    void DecreaseHealth(int _hitDamage);
}
public class CLiveBehaviour : ILivable {
    private int _m_health;
    public int m_health {
        get {
            return _m_health;
        }
        private set {
            if (value <= 0) {
                _m_health = 0;
                Die();
            }
            else {
                _m_health = value;
            }
        }
    }
    public CLiveBehaviour(int _health) {
        m_health = _health;
    }
    public void Die() {

    }
    public void DecreaseHealth(int _hitDamage) {
        m_health -= _hitDamage;
    }
}

public class CAttackBehaviour : IAttackable {
    int _m_hitDamage;
    int m_hitDamage {
        get {
            return _m_hitDamage;
        }
        private set {
            _m_hitDamage = value;
        }
    }
    public CAttackBehaviour(int _hitDamage) {
        m_hitDamage = _hitDamage;
    }
    public void Attack(ILivable _liveBehaviour) {
        _liveBehaviour.DecreaseHealth(m_hitDamage);
        ///
    }
}
public class CNoAttackBehaviour : IAttackable {

    public CNoAttackBehaviour() {

    }
    public void Attack(ILivable _liveBehaviour) {
        //empty
    }
}
public class CMoveBehaviour : IMovable {
    public void Move() {
        ///
    }
}
public class CDisplayBehaviour : IDisplayable {
    public void Display() {
        ///
    }
}
public class CNoDisplayBehaviour : IDisplayable {
    public void Display() {
        //empty
    }
}

public class CSoldiorBase {
    private string _m_name;
    public string m_name {
        get {
            return _m_name;
        }
        private set {
            _m_name = value;
        }
    }

    private int _m_id;
    public int m_id {
        get {
            return _m_id;
        }
        private set {
            _m_id = value;
        }
    }

    public CSoldiorBase(string _name, int _id) {
        m_name = _name;
        m_id = _id;
    }

}

public class CSoldior1 : CSoldiorBase {// without interface fields(soldior1 class)
    CMoveBehaviour m_moveBehaviour;
    CAttackBehaviour m_attackBehaviour;
    CDisplayBehaviour m_displayBehaviour;
    CLiveBehaviour m_liveBehaviour;
    public CSoldior1(string _name, int _id, CLiveBehaviour _liveBehaviour, CMoveBehaviour _moveBehaviour,
        CAttackBehaviour _attackBehaviour, CDisplayBehaviour _displayBehaviour) : base(_name, _id) {
        m_moveBehaviour = _moveBehaviour;
        m_liveBehaviour = _liveBehaviour;
        m_attackBehaviour = _attackBehaviour;
        m_displayBehaviour = _displayBehaviour;
    }
}
public class CSoldior2 : CSoldiorBase {// without interface fields(soldior2 class)
    CMoveBehaviour2 m_moveBehaviour;
    CAttackBehaviour2 m_attackBehaviour;
    CDisplayBehaviour m_displayBehaviour;
    CLiveBehaviour m_liveBehaviour;
    public CSoldior2(string _name, int _id, CLiveBehaviour _liveBehaviour, CMoveBehaviour2 _moveBehaviour,
        CAttackBehaviour2 _attackBehaviour, CDisplayBehaviour _displayBehaviour) : base(_name, _id) {
        m_moveBehaviour = _moveBehaviour;
        m_liveBehaviour = _liveBehaviour;
        m_attackBehaviour = _attackBehaviour;
        m_displayBehaviour = _displayBehaviour;
    }
}
public class CSoldior3 : CSoldiorBase {// without interface fields(soldior3 class) can not attack
    CMoveBehaviour m_moveBehaviour;
    CDisplayBehaviour m_displayBehaviour;
    CLiveBehaviour m_liveBehaviour;
    public CSoldior3(string _name, int _id, CLiveBehaviour _liveBehaviour, CMoveBehaviour _moveBehaviour,
        CDisplayBehaviour _displayBehaviour) : base(_name, _id) {
        m_moveBehaviour = _moveBehaviour;
        m_liveBehaviour = _liveBehaviour;
        m_displayBehaviour = _displayBehaviour;
    }
}
public class CSoldior4 : CSoldiorBase {// without interface fields(soldior4 class) can not display
    CMoveBehaviour m_moveBehaviour;
    CAttackBehaviour m_attackBehaviour;
    CLiveBehaviour m_liveBehaviour;
    public CSoldior4(string _name, int _id, CLiveBehaviour _liveBehaviour, CMoveBehaviour _moveBehaviour,
         CAttackBehaviour _attackBehaviour) : base(_name, _id) {
        m_moveBehaviour = _moveBehaviour;
        m_liveBehaviour = _liveBehaviour;
        m_attackBehaviour = _attackBehaviour;
    }
}

public class CSoldior : CSoldiorBase { // with interface fields
    IAttackable m_attackBehaviour;
    IMovable m_moveBehaviour;
    IDisplayable m_displayBehaviour;
    ILivable m_liveBehaviour;
    public CSoldior(string _name, int _id, ILivable _liveBehaviour, IMovable _moveBehaviour,
        IAttackable _attackBehaviour, IDisplayable _displayBehaviour) : base(_name, _id) {
        m_liveBehaviour = _liveBehaviour;
        m_moveBehaviour = _moveBehaviour;
        m_attackBehaviour = _attackBehaviour;
        m_displayBehaviour = _displayBehaviour;
    }
}


void main() {
    //different type of soldiors
    //----------------------------------------------
    CSoldior1 soldior1_1 = new CSoldior1("mahdi", 0, new CLiveBehaviour(100), new CMoveBehaviour(),
        new CAttackBehaviour(40), new CDisplayBehaviour());
    CSoldior2 soldior2_1 = new CSoldior2("Jun", 1, new CLiveBehaviour(200), new CMoveBehaviour2(),
        new CAttackBehaviour2(45), new CDisplayBehaviour());
    CSoldior3 soldior3_1 = new CSoldior3("Ali", 2, new CLiveBehaviour(130), new CMoveBehaviour(),
        new CDisplayBehaviour());
    CSoldior4 soldior4_1 = new CSoldior4("Michel", 3, new CLiveBehaviour(180), new CMoveBehaviour(),
        new CAttackBehaviour(20));
    //----------------------------------------------
    CSoldior soldior_1 = new CSoldior("Sara", 4, new CLiveBehaviour(240), new CMoveBehaviour(), new CAttackBehaviour(15),
        new CDisplayBehaviour());
    CSoldior soldior_2 = new CSoldior("Zahra", 5, new CLiveBehaviour(768), new CMoveBehaviour(), new CNoAttackBehaviour(),
        new CDisplayBehaviour());
    CSoldior soldior_3 = new CSoldior("Hafez", 6, new CLiveBehaviour(456), new CMoveBehaviour(), new CAttackBehaviour(35),
        new CNoDisplayBehaviour());
    CSoldior soldior_4 = new CSoldior("Sadi", 7, new CLiveBehaviour(550), new CMoveBehaviour2(), new CAttackBehaviour2(10),
        new CNoDisplayBehaviour());

}

if I use interface fields into the class, I have a flexible class that can suit for many conditions (soldior types) and also can remove a component like display with nodisplayClass. Is it suitable that I implement nocomponentClass like noDisplayClass or pass null to constructor or write new class without this component thx in advance