Mailer lived his life in order to gather material. He was 19 when the US entered the Second World War and he wondered whether a better novel could be written about the Pacific campaigns or the war in Europe; he started planning his war novel before he was called up in March 1944. During basic training, he took notes “on the sex lives of the other soldiers”. He fought in the Philippines and listed the names of the soldiers he met; they turn up in The Naked and the Dead.
This hunger – to get life into literature –was a constant. He followed The Naked and the Dead with two more novels but soon became frustrated with the restrictions of fiction. In the late 1950s, after an unhappy period in Hollywood trying to write screenplays, he turned to journalism and non-fiction. The so-called New Journalists of the 1960s –Gay Talese, Tom Wolfe, Joan Didion –made their pursuit of the story part of the story and wrote themselves into their reports. Mailer’s innovation was an extreme version of this.
more here.