Strike up the drums, and let the tongue of war

Dauphin
Strike up the drums, and let the tongue of war
Plead for our interest and our being here.
Bastard
Indeed, your drums being beaten will cry out,
And so shall you, being beaten. Do but start
An echo with the clamor of thy drum,
And even at hand a drum is ready braced
That shall reverberate all as loud as thine.
Sound but another, and another shall,
As loud as thine, rattle the welkin's ear
And mock the deep-mouthed thunder. For at hand,
Not trusting to this halting legate here,
Whom he hath used rather for sport than need,
Is warlike John, and in his forehead sits
A bare-ribbed Death, whose office is this day
To feast upon whole thousands of the French.
Dauphin
Strike up our drums to find this danger out.
Bastard
And thou shalt find it, dauphin, do not doubt.