In classic Tarantino fashion, the story is told nonlinearly, bouncing between past, present, and future. So by the time we get to read about Cliff’s third murder, we realize it's actually his first (since the war, at least). When he returns to the US after being discharged, he meets up with an old flame in a Cleveland, Ohio pizzeria. Turns out she is one of the mistresses of a mafioso and he has sent two goons to “persuade” Cliff to walk away from the peroxide blonde. After being threatened, he warns the thugs that he is such a respected war hero that he could probably shoot them both in public and get away with it. And straight out of the Tarantino playbook, Cliff shoots them both in the head in the middle of the crowded restaurant. When he tells the cops he felt threatened and didn’t know what to do but defend himself, they sympathized with the vet and that was that.