In 1967, he starred in action movie "The Venetian Affair", directed by Jerry Thorpe. A year later, he had a role in "Bullitt" (1968), with Steve McQueen. For this work Robert Vaughn was nominated for a BAFTA Award, for "Best Supporting Actor". In 1969 he starred with George Segal, in the war movie "The Bridge at Remagen" (1969). Then in 1970, has the role of Servilius Casca in "Julius Caesar", with Charlton Heston.