Flashfire is a science fiction novel by American writers David Sherman and Dan Cragg published in 2006.

A coalition of a dozen lesser worlds, tired of being second class citizens, decides to secede from the Confederation.

Publishers Weekly said in their review that "this book not only entertains but makes the reader reconsider the costs of government secrecy.

"[1] Tom Russo said in his review for Entertainment Weekly that "the authors, former military men, convincingly relay troop maneuvering—to the point that it frequently smothers the action.

"[2] Roland Green reviewing for Booklist said "Sherman and Cragg's justifiably popular Starfist series continues with a vivid depiction of ground combat worthy of ranking with Heinlein's classic Starship Troopers (1953).