Granger's style of leadership is a bit rough, confident, blunt, no-nonsense, highly focused and full of perspective.
For rough around the edges, his language and manners are a bit rough. After the bomb, he "arose, felt of his arms and legs, swearing, swearing incessantly under his breath." He was confident; he incorporated Montag right in, assuming automatically that Montag would be with them, agree in their mission. He immediately gives Montag the scent-changing fluid, and very quickly introduces everyone outright, putting a lot of trust in Montag. He welcomes him like he's already a part of the clan. This is assuming, but also a man that goes with his gut instincts. He tells Montag of his trust, "The look of you's enough." His bluntness and no-nonsense nature comes through in his curt way of speaking. He tells Montag, "you look like hell", and of the mistakes they've made he states, "we went right on spitting in the graves of all the poor ones who died before us". He is very focused, and through his grandfather's teachings, and his own unique perspective, has a solid vision of the future: "We're remembering. And that's where we'll win out in the long run. And someday we'll remember so much...that we'll shove war in [the grave] and cover it all up."
He's an unusual leader, but definitely one who will lead men, with grit and iron, hopefully into a better future.