Pershing was the leader of US forces in Europe during World War I. George. S. —died July 15, , Washington, D. history, and not so long ago, when General John “Black Jack” Pershing was the most famous American alive. The president. S. He served most famously as the. Army general John J. history. Pershing was one of America's most accomplished generals. Pershing o por su apodo Black Jack, fue un oficial del ejército de los Estados Unidos. Pershing es el único militar estadounidense que alcanzó en vida el rango. S. S. U. John J. He is most famous for serving as commander of the American Expeditionary Forces in World. After World War I, Pershing was promoted to General of the Armies and became the only active-duty six-star general in U. A pivotal leader of the US Army in the early 20th century, General John J. General of the Armies John Joseph Pershing GCB (September 13, – July 15, ), nicknamed "Black Jack", was a senior American United States Army officer. Pershing () commanded the American Expeditionary Force (AEF) in Europe during World War I. . There was a time in U. C. Army general who. ) was a U. Pershing (born September 13, , Laclede, Missouri, U. One of the most dashing men ever to wear the uniform, John Joseph "Black Jack" Pershing was the most accomplished and celebrated American soldier of the. S. John J.