Matthew Poole and continuators on Job 39:25

25. He saith among the trumpets, ha, ha ; and he smelleth the battle afar off , the thunder of the captains , and the shouting.

An Expression of Joy and Alacrity, declared by his proud neighings, whereby he doth in some sort answer the sound of the Trumpets, in way of scorn and challenge.

i. e. He perceiveth, as this Phrase is used, Iudg. 16. 19.

At some distance, either of place, or rather of time, as the word is most frequently used. He perceives by the motion of the Souldiers, and the clattering of the Arms, that the Battle is at hand, which is very welcome to him.

By which he understands either the military Orations which the Captains make and deliver with a loud voice to animate their Souldiers to the Battle: Or rather, the loud and joyful clamour begun by the Commanders, and followed by the Souldiers when they are ready to join Battle, that thereby they may both daunt their Enemies, and encourage themselves.