The Last Crusade: Spain 1936By Warren Carroll(Christendom Press/ISI Books, 240 pages, $15) WHEN THE HEROICS of the Spanish Civil War come up -- Orwell's Homage to Catalonia, Hemingway's fictions or the effusions of various poets -- there is a very large and usually unremarked elephant in the room: Orwell, who actually fought, and Hemingway who wrote about fighting, were on the wrong side. The strategic point is simple: had the Stalinists won war, then during the period of the Hitler-Stalin pact from 1939 to mid-1941, they would have allowed Hitler to cross Spain and seize Gibraltar. Had this happened, the...