Sir Merrick nods and whispers "Take them by surprise and overwhelm them before they can raise a cry. We take one prisoner unconscious for questioning and leave with him."
When Zirat indicates how far they are and which directions Sir Merrick will line up for a charge then give the signal leaping into the fray glaive first willing to charge into darkness guided by his darkvision.
Charging Glaive +10 1d10+6 x3 slashing +1d8?(I believe) for powerful charge feat
Initiative +1
Reach with his glaive and combat reflexes.