Dan Rather just won’t let it go.

“I have a story to tell from my point of view,” he says about his new book, Rather Outspoken: My Life in the News, which roasts network management for its “spineless” behavior during the Bush episode; takes potshots at his successor in the CBS Evening News anchor chair, Katie Couric, as a purveyor of “News Lite”; and settles scores with former colleagues who, as he writes, “after pretending to be friends for all those years, stealthily snuck around giving anonymous newspaper quotes and otherwise scheming to put the dirk in deep when I was down and hurting.”

Rather explains: “I wanted to tell it as honestly and as candidly as I could with—as Lyndon Johnson used to say—the bark off.”

The Sept. 8, 2004, Bush segment and its use of dubious documents to bolster the case that the 43rd president benefited from family connections and then went AWOL during his Vietnam-era stint in a “champagne unit” of the guard, plus Rather’s subsequent lawsuit against the network he served for 44 years—24 of them as anchor and managing editor of CBS’s flagship news program—account for only a fourth of the book. Rather initially dug in his heels during the firestorm that accompanied his damning report on a sitting president two months before his reelection. But he ultimately apologized for airing widely debunked photocopies of purported memos critical of young Bush’s performance and allegedly written by his commanding officer, the late Jerry B. Killian, lieutenant colonel in the Texas Air National Guard, saying CBS News could no longer vouch for their authenticity....