Carelessly holding in his stallion that was neighing and pawing the ground, eager to rejoin its fellows, he watched his squadron draw nearer.
Why he had to go he did not know; but after his after-dinner nap he gave orders to saddle Mars, an extremely vicious gray stallion that had not been ridden for a long time, and when he returned with the horse all in a lather, he informed Lavrushka (Denisov’s servant who had remained with him) and his comrades who turned up in the evening that he was applying for leave and was going home.
There are no more uses of "stallion" in the book.
Show samples from other sources
Marcus jerks his head around, shocked into stillness as a foam-coated stallion gallops through the doors of the stadium.
Sabaa Tahir -- An Ember in the Ashes
The sewing machine was a gleaming, glossy black that reminded her of the landowner’s horse back in Italy; sewing, Bella felt like she was holding on to the reins of a wild stallion.