Yossarian was making an uncouth spectacle of himself by walking around backward with his gun on his hip and refusing to fly more combat missions, Milo said.
Yossarian’s heart pounded with fright and horror at the pitiful, ominous, gory spectacle of the broken corpse.
The pimp spun the turban high on his finger like a trophy and kept himself skipping inches ahead of her finger tips as he led her in a tantalizing circle around the square congested with people who were howling with laughter and pointing to Yossarian with derision when Milo strode up with a grim look of haste and puckered his lips reprovingly at the unseemly spectacle of so much vice and frivolity.
There are no more uses of "spectacle" in the book.
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Marcus and his brother will enjoy such a spectacle.
Sabaa Tahir -- An Ember in the Ashes
But instead of listening to him I would have you day by day fix your eyes upon the greatness of Athens, until you become filled with the love of her; and when you are impressed by the spectacle of her glory, reflect that this empire has been acquired by men who knew their duty and had the courage to do it, who in the hour of conflict had the fear of dishonor always present to them, and who, if ever they failed in an enterprise, would not allow their virtues to be lost to their country,…