Forty-five years ago, a small force of Israeli soldiers flew south over the Red Sea, skimming the territorial waters of a string of enemy states and rescuing nearly all of the 105 hostages at Entebbe, Uganda. The story is well-known. But what few people realize is that those soldiers, many of whom served in the elite Sayeret Matkal reconnaissance unit (or the “Unit,” as the outfit is known), met with the prime minister and defense minister and, after being driven back to their base, simply ate, showered, congratulated one another on a job well done, and went home. The post-mission...