The WhatsApp group would eventually lead to formal allegations that Special Operations Chief Edward Gallagher fatally stabbed a wounded Islamic State captive in his care and shot civilians in Iraq in 2017. Gallagher, 40, has pleaded not guilty to the charges. A jury of mostly combat Marines will ultimately decide the fate of the 19-year-veteran and Bronze Star recipient charged with murder, attempted murder and conduct prejudicial to good order and discipline for posing with the corpse for photographs. No matter the outcome, the court-martial at Naval Base San Diego has provided a rare view into the insular Navy SEAL...