“Team America: Patton, MacArthur, Marshall, Eisenhower, and the World They Forged” by Robert L. O’Connell (Harper)Insightful and informative, military historian Robert L. O’Connell’s latest book carries a title that might evoke in today’s readers a group of superheroes bent on saving the free world — in this case four Army generals transforming the United States into a global peacekeeper.O’Connell prefers to cast them as a military “murderers’ row,” a 1920s baseball analogy for formidable talent that his subjects would undoubtedly have appreciated.