Omar Nelson Bradley (1893-1981) was born on February 12, 1893, into a teacher's family in Clark, Missouri, USA. He graduated from middle school in 1910 and became a railway mechanic due to his poor family.

In 1911, Bradley was admitted to West Point Military Academy, keeping the school motto in mind "Responsibility, honor, country", has undergone strict military training and systematic cultural study. Four years later. Bradley graduated from West Point and served in the Northwest United States. In September 1920, he was transferred to the West Point Military Academy mathematics instructor and began to browse and study military history and biographies of military figures. In the spring of 1924, he was promoted to major.

In September 1924, Bradley was allowed to attend Fort Benning Infantry School for one year, focusing on learning the "mobile warfare" tactics and the use of Libyan Army weapons. After graduation, he served as battalion commander of the 27th Infantry Regiment in Hawaii, and later transferred to the National Guard's Hawaiian Garrison. In September 1928, Bradley was ordered to enter the Army Command and Staff School for further study. Through study and training, he mastered good thinking methods, and his ability to plan and control war has been improved. In September 1929, Bradley was transferred to the Tactical Department of Fort Benning Infantry School. The following year, Bradley was appointed by Marshall as chairman of the Ordnance Department and became one of Marshall's main assistants in implementing teaching reform. After teaching at the Infantry School for 4 years, Bradley was admitted to the Army Military Academy for further study. In 1934, Bradley was assigned to the faculty of tactics at West Point Military Academy. In July 1936, he was promoted to lieutenant colonel. In 1938, Bradley was transferred to the Army Staff.

February 1941. Bradley was ordered to serve as principal and resident commander of Fort Benning Infantry School, and was promoted from lieutenant colonel to brigadier general. In addition to comprehensively presiding over the infantry school, Bradley has established a reserve officer school to conduct accelerated training to meet the requirements of large-scale expansion of the army to increase grassroots officers, and to form and train tank units and airborne units to improve the Army's mobile combat capabilities. In December of the same year, Bradley was transferred to the commander of the 82nd Infantry Division, which was being restructured, and promoted to Major General. He invited the famous York Midlands to give speeches and military parades to let the recruits understand the history of the division and inspire the local spirit; and implemented a strict physical exercise program to enhance the physical fitness of the soldiers. In June of the following year, Bradley was appointed commander of the 28th National Guard Division, making the division a well-trained force.

In February 1943, while Bradley received the order to be promoted to commander of the U.S. 10th Army, he was sent by Marshall to North Africa to serve as Eisenhower's "eyes and ears." On March 6, Patton became commander of the U.S. 2nd Corps, and Bradley was appointed deputy commander of the U.S. 2nd Corps. On March 17, the Battle of Tunisia began, and the 2nd Army was responsible for assisting. On April 15, Bradley was promoted to commander and took full command of the combat operations of the Second Army. On May 7, Bradley led his troops to invade Bizerte. On May 13, all German and Italian troops in North Africa were wiped out, and Bradley was ordered to go to Algiers to assist Patton in drawing up the Sicilian battle plan. In June, Bradley was promoted to lieutenant general. In the early morning of July 10, Bradley led the 2nd Corps to participate in the Battle of Sicily (code-named Husky) within the formation of the U.S. Seventh Army under Patton. According to the combat plan drawn up by Montgomery, the US military canceled landing operations near Palermo. Bradley commanded the 1st Infantry Division to attack Gera and the 45th National Guard Division to attack Skogliti. After landing successfully and repelling the defenders 'counterattack, Bradley's troops reached the main road in the north, while the British were blocked in Catania. At this time, the US military is expected to quickly advance towards the northern coast, which can not only outflank Messina, but also reduce the pressure on the British military. However, due to Montgomery's obstruction, Bradley's troops were ordered to give up the road to the British army. Bradley realized that this move would deprive the U.S. military of favorable combat conditions and reduce the status and role of the U.S. military. However, after pointing to Patton, he still faithfully implemented the order. While Patton was driving the Provisional Army to Palermo without authorization, Bradley led his troops through high mountains and obstacles and continued north. On July 23, Bradley's troops attacked the Termini-Imereze coast and Petriya, but unfortunately they were still unable to intercept the German troops withdrawing from Palermo. The ministry quickly turned its offensive edge to Messina and launched the offensive battle of Trona. In August, Bradley and Patton carried out "leapfrog" amphibious sieges in Sant 'Agata and Brolo respectively. On August 17, the U.S. and British troops entered Messina one after another. Most of the Axis forces withdrew to Italy mainland, and the Battle of Sicily ended.

In January 1944, Bradley was officially appointed commander of the 1st Army Group by Eisenhower. In the early morning of June 6, the "Overlord" operation began. After the landing of airborne troops and naval and air force fire attacks, Bradley commanded the U.S. 1st Army Group within the British 21st Army Group to successfully land in Omaha and Utah Beach. On July 1, the U.S. military captured Cherbourg Port and the Cotentin Peninsula. On July 25, Bradley began the Battle of Cobra, which was postponed due to poor weather, after consolidating and expanding the landing site. On July 30, the U.S. military broke through the German line of defense in Afranches and captured a total of 20,000 German troops, successfully ending the battle.

On August 1, the 1st and 3rd Armies of the United States formed the 12th Army Group of the United States, with a strength of nearly 400,000. Breedley served as commander of the Army Group. Bradley swept across the Brittany Peninsula with his Eighth Corps, while the rest of the armies spread out along the Caen-Le Mans line, preparing to advance towards Paris and carry out a long-range roundabout encirclement of the Normandy German army. At this time, the Germans launched a counterattack against Mortan, attempting to seize Afranche. Bradley realized that the German army's biggest tactical mistake provided a once-in-a-lifetime opportunity for the Allies to encircle and annihilate the German army in Normandy, so he changed the original plan and organized the Battle of Falaise (the British and Canadian troops advanced to Falaise and crossed Argendan, the U.S. troops in Mortan withstood the German counterattack, and the U.S. troops attacking Le Mans turned north towards Argendan). On August 19, the Allies surrounded about 12 German divisions. Due to problems in coordination, the Allies killed 10,000 German troops and captured 50,000. About 40,000 German troops successfully broke through. This battle prevented the Germans from establishing a line of defense along the Seine River. On August 25, the Allies reached the Seine River, and the U.S. troops under the command of Bradley and the French army worked together to liberate Paris, the capital of France.

After the liberation of Paris, Bradley commanded the U.S. military to advance rapidly, capturing Reims, Charon, Verdun, Namur and Liège, and reaching the Siegfried Line (the "Western Barron"). On October 2, the U.S. military surrounded Aachen on both wings and occupied Aachen on the 21st. However, due to the increased German resistance, the destruction of ports and the lack of supplies such as gasoline, the Allies were forced to stop their offensive and wait for logistical supplies. The plan proposed by Bradley at the Allied Supreme Command operational meeting on September 22 was adopted by Eisenhower on October 18, that is, the 12th Army Group would be the main force and split into two forces to attack the Rhine River: Bradley set out from Aachen to attack Cologne and Bonn, and the other through Saar to advance towards Frankfurt, and then went north together to surround the Ruhr area; Montgomery, after clearing the remnants of the Skeld Gulf, attacked southeast from Nehügen, pointing straight to the Ruhr area. On November 8, Bradley began to implement the above-mentioned juice stroke, but the progress was not smooth.

On December 16, 1944, the German army concentrated about 24 divisions and 1000 aircraft to launch a counterattack into the Ardennes Mountains, severely injuring Hodges. Bradley underestimated the possibility of a German counterattack in the Ardennes. The next day, after analyzing the German offensive, Bradley, Eisenhower and others clarified the main tasks of the Allied forces at present: ¢Ù resist the German forces that broke into the Ardennes Mountains from the north and south, ¢Ú control St. Vitus and Bastoni on the choke road to the west, and ¢Û organize resistance along the bank of the Mas River. The German offensive seriously threatened Bradley's Forward Command in Luxembourg, and Eisenhower also urged the Forward Command to withdraw to Verdun. Bradley refused for fear that the move would shake the morale of the army. On December 8, Bradley decisively ordered Hodges 'troops to turn south, while Patton's troops turned north to meet the German army. On the 22nd, Patton began an offensive, attacking the German bulge from south to north. On the 23rd, the Allies began a fierce air assault on the German army. In order to win support from the British army, Eisenhower temporarily transferred Bradley's 1st and 9th U.S. Army to Montgomery. However, Montgomery did not launch the attack until January 1945.

On January 31, 1945, the Allies joined forces at Ufalitz, recovered the bulge, and drove the Germans back to the original line of defense. In the Battle of the Ardennes, the Allies cost 77,000 casualties and caused 120,000 German casualties. In accordance with Eisenmonwell's order on March 21, Bradley fully organized and implemented the "low-key" and "navigation" combat plans, led his troops across the Rhine River, advanced towards Frankfurt, and then advanced into Kassel with all his strength. The Allies 'final plan to defeat Nazi Germany was put forward at the Rheinberg Conference: the U.S. 9th Army and the 1st Army surrounded and wiped out the German army in the Ruhr area with a north-south attack, and then joined forces in the Padbos-Kassel area. After that, Bradley will command the 1st Army, 3rd Army and 9th Group Vehicles to launch a large-scale attack from Kassel, crossing central Germany and reaching the bank of the Elbe River, facing the Soviet army across the bank; Montgomery covered the northern flank and advanced north, crossing the Elbe River to the Danish border; Devers covered the southern flank and advanced southeast to Austria. This plan, mainly proposed by Eisenhower and Bradley, is known as the "Bradley Plan."

March 28. Bradley directed the implementation of the plan. On April 1, the British captured Paderborn and completed the encirclement of the German army in the Ruhr area. On April 4, all the troops of the 12th Army Group were reorganized, with a total of 4 armies (the 1st, 3rd, 5th, 9th, and 15th Armies of the United States) with a strength of approximately 1.3 million. This is the largest army group in the history of the U.S. military. In order to get closer to the command, Breedre moved the Army Group headquarters to Wiesbaden, Germany. On April 18, about 320,000 besieged German troops surrendered. Model, the German commander-in-chief in the Western Front, shot himself. Prior to this, on April 6, Bradley ordered to continue marching eastward, from Kassel to the Elbe River, a long journey of 120 miles. The targets of each group army were Leipzig, the bridgehead on the other side of the Elbe River, and the Moude River respectively. On April 13, the entire German defense line on the Elbe River was breached. Bradley immediately prepared to implement the second phase of the battle plan to prevent the German army from fleeing towards the Alps and Norway. To this end, he ordered Patton's troops to continue to advance southeast, reaching Linz and the Danube, while Devers 'troops, covering Patton's right flank, advance eastward through Nuremberg and Munich. On April 15, the Allies launched their final general offensive against Germany. On April 26, the U.S. military and Soviet forces officially joined forces at Torgau on the Elbe River. On May 7, Nazi Germany announced its unconditional surrender.

In August 1945, Bradley became director of the U.S. Veterans Administration. In November 1947, he became Chief of Staff of the U.S. Army. In August 1949, Bradley was promoted to chairman of the Joint Chiefs of Staff of the United States, and soon served as chairman of the NATO Military Committee and its Standing Committee. In September 1950, Bradley was promoted to a five-star general in the United States. Bradley participated in the planning and organization of the Korean War during his tenure as chairman of the Joint Chiefs of Staff.

Bradley passed away in Washington on April 8, 1981. His main works include "The Story of a Soldier".