Early in the American intervention in the war, Lewis was promoted to brigadier-general in the regular Army, taking command of the
76th Infantry Brigade, and later the
38th Infantry Division at Camp Shelby, Mississippi. As they trained and prepared for departure for Europe, General Lewis was sent to France and placed in command of all US Forces in Paris. With many members of the AEF stationed in the city and many more passing through on the way to the front, General Pershing thought it necessary to have one command responsible. In November 1917 Paris was made a separate military district, and became a separate command under General Lewis. He was given jurisdiction over all the troops stationed in the city, and all casual visitors. He published orders in December that prescribed the rules of conduct for all American forces in or visiting the city, or those rotating to or from the front lines. These regulations remained in force under his successors, when Paris was full of men seeking recuperation and recreation, and for whose good behavior the district commander was responsible. , along with Major General Edward M. Lewis, commanding the
30th Division, inspecting
doughboys of Lewis's division in France, August 6, 1918. Stood behind the King is Brigadier General
Samson L. Faison, commanding the 30th Division's
60th Brigade. On May 5, 1918, he succeeded Brigadier General
Peter Murray in command of the
3rd Infantry Brigade of Major General
Omar Bundy's
2nd Division in Verdun, just before it moved south to blunt the
German advance on Paris. With the Marines assigned to the division fighting in Belleau Wood, troops under Lewis dug in just south of the Paris to Metz road stopping the German advance just outside Chateau-Thierry. This
Second Battle of the Marne would become part of the
Hundred Days Offensive, turning the tide of the war to the Allies favor. In what Pershing called a "Brilliantly executed operation" Lewis led his brigade in capturing the important town of Vaux on July 1. To celebrate the victories of the 2nd and 3rd Infantry Divisions, including the Marine Brigade serving under them in nearby Belleau Wood, a monument was raised just above the town of Chateau Thierry. The
American Battlefield Commission Monument shines upon that hill today. . In early July 1918 he was promoted to major general, and was assigned to command the
30th Division. The 30th and the 27th Division served under British Command as part of the bargain Pershing struck with General Haig and Marshall Foch, forming the II American Corps under General Read. "Old Hickory" fought with the First, Second, Third and
Fourth British Armies, lastly serving under General Rawlinson. As part of the Fourth British Army, they broke through the Hindenburg Line on September 29, 1918, at Bellicourt in the
Battle of St. Quentin Canal winning the praise of General Pershing "... the 30th Division did especially well. It broke through the Hindenburg Line on its entire front and took Bellicourt and part of Nauroy by noon of the 29th.". Still attached to the 4th, the 30th continued to attack while engaged in some of the most bitter fighting in the war. They pushed the Germans back seven miles to the Selle River by 11 October, then crossed it and captured Molain and St.-Martin-Riviere on the 17th. He was awarded the
Army Distinguished Service Medal for his performance during this period. The medal's citation reads:
Field Marshal Sir Douglas Haig, Commander of the British Expeditionary Force, sent this letter to
General Read, Commanding the II American Corps: "I wish to express to you personally and to all the officers and men serving under you my warm appreciation of the very valuable and gallant services rendered by you throughout the recent operations with the Fourth British Army. Called upon to attack positions of great strength, held by a determined enemy, all ranks of the 27th and 30th American Divisions under your command displayed an energy, courage, and determination in attack which proved irresistible. It does not need me to tell you that in the heavy fighting of the past three weeks you have earned the lasting esteem and admiration of your British Comrades-in-Arms, whose success you so nobly shared" General Pershing visited the 30th Infantry Division on 21 January 1919 for an inspection, and sent the following letter to General Lewis: AMERICAN EXPEDITIONARY FORCES OFFICE OF THE COMMANDER-IN-CHIEF, FRANCE, February 19, 1919 MAJOR GENERAL EDWARD M. LEWIS, Commanding 30th Division, A. E. F. MY DEAR GENERAL LEWIS: It gives me much pleasure to extend to you and the officers and men of the 30th Division my sincere compliments upon their appearance at the review and inspection on the 21st of January, southwest of Teille, which was excellent, and is just what would be expected in a command with such a splendid fighting record. After its preliminary training the Division entered the line on July 16, where it remained almost continuously until the end of October. In that time it was in the actual battle from 30 August, and took part in the Ypres-Lys and Somme offensives. On September 29, the Division broke through both the Hindenburg and the Le Catlet-Nauroy lines, capturing Bellicourt and Nauroy, an operation on which all subsequent action of the 4th British Army depended. From October 7 to October 20, the Division advanced 23 kilometers in a continued series of attacks, capturing 2,352 of the enemy. Brancourt, Premont, Busigny, St. Benin, St. Couplet and Escaufort, La Haie Mineresse, and Vaux Andigny are names which will live in the memories of those who fought in the 30th Division. But its especial glory will always be the honor you won by breaking the Hindenburg Line on September 29. Such a record is one of which we are all proud. It is gratifying to see your troops in such good physical shape, but still more so to know that this almost ideal condition will continue to the end of their service and beyond, as an exemplification of their high character and soldierly qualities. I inspected the artillery brigade of the Division later, and found the same high standard of personnel that marks the rest of the Division. Very Sincerely Yours, JOHN J. PERSHING Lewis would lead the 30th Division until its return to the United States in 1919, with him staying behind in France to lead the Infantry Board (informally called "The Lewis Board"), to study and learn the lessons of the war. ==Post-war years==