That DeMille has written a sequel to The General's Daughter comes as no surprise; after all, that's arguably his best-known novel because of the hit film version starring John Travolta. Nor is it surprising that he's set this sequel in Vietnam; returning hero Chief Warrant Officer Paul Brenner, Ret., served two stints there during the war, and DeMille himself not only saw action in Nam but returned in 1997 for an extended visit. What is curious, and...