Defense Secretary Mark Esper’s confirmation of the order from Trump is the latest turn in an extraordinary series of events that pitted the president against his senior military leadership over the fate of Chief Petty Officer Edward Gallagher, the SEAL who was convicted of posing for photographs with the body of a teenage Islamic State captive in American custody. The Navy wanted to oust Gallagher from the commando unit. Instead, it was the Navy secretary, Richard V. Spencer, who was fired on Sunday. Spencer said, “Unfortunately, it has become apparent that in this respect, I no longer share the same understanding with the commander in chief who appointed me, in regards to the key principle of good order and discipline. I cannot in good conscience obey an order that I believe violates the sacred oath I took.”