THE MULE ON THE MINARET by Alec Waugh. 506 pages. Farrar, Straus and G/'roux. $6.95.
The young half-Egyptian British captain was vain and foppish, and he was crazy about women. What rocked them back on their heels, he figured, was his dazzling smilewell, not his smile exactly, but his teeth. Superbly white and straight, they suggested strength and virility. So after careful consideration, British Intelligence chose the young officer for a secret mission to inform the Bulgarian underground that Turkey was entering the war on the Allied side and British troops were preparing to...