In 1913 a bestselling author of tremendous originality, who wrote fiction and fantasy and history and was an an outspoken pacifist and socialist, published a book that laid out a scheme for a miniature war game, involving model soldiers, that could be played indoors or out. The author said he had never seen a professional military man play his game without sinking into profound confusion. This led him to declare that real war must be a great "blundering thing." Name the author and his book.

All entries (one per person) must be clearly written on postcards and mailed to: Book Bag, The Washington Post, Washington, D.C. 20071, and must include complete return address and competition number. The winning entry will be the first correct answer drawn at random. Employees of The Washington Post Company and their families are not eligible to enter. Entries must be received no later than September 6. The winner's name and city of residence will be announced in the September 16 issue. A Washington Post Book World book bag will be sent to the winner. Answer to Book Bag #587: In Jonathan Swift's Gulliver's Travels the Little Endians and the Big Endians dispute how an egg should be broken. Winner: Adelaide L. Brown, Washington, D.C.