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