American Expeditionary Forces Artillery

American Expeditionary Forces Artillery
Unit name	American Expeditionary Forces Artillery
Dates	1917–1919
Country	United States of America
Branch	United States Army
Role	Field artillery, coastal artillery, anti-aircraft artillery
Notable commanders	John J. Pershing

American Expeditionary Forces Artillery The American Expeditionary Forces Artillery served as the principal United States artillery arm deployed to the Western Front during the First World War, providing counterbattery, preparatory bombardment, and creeping barrages in support of infantry operations. Raised, organized, and equipped under the supervision of General John J. Pershing, the artillery component worked alongside French and British artillery formations during major campaigns such as the Meuse-Argonne Offensive and the Saint-Mihiel operation. Its organization, doctrine, and logistical networks evolved rapidly in response to trench warfare, combined arms coordination, and advances in fire control and aerial observation.

Background and Organization

The AEF Artillery emerged from prewar organizations including the United States Army Coast Artillery Corps, United States Army Field Artillery Branch, and National Guard units mobilized under the Selective Service Act of 1917, integrating Regular Army batteries, National Guard regiments from states such as New York (state), Texas, and Illinois (state), and National Army volunteers. Command relationships connected leaders like John J. Pershing with staff officers trained at institutions such as the United States Military Academy, Fort Sill, and the Command and General Staff College. The artillery was organized into corps artillery, divisional artillery, and separate heavy and railway artillery groups, drawing doctrine from exchanges with the French Army and British Expeditionary Force. Coordination with allied staffs—represented by missions from figures associated with the École Polytechnique, École Supérieure de Guerre, and the Royal Artillery—shaped unit structures, tables of organization, and the formation of brigades and regiments attached to divisions like the 1st Division (United States), 2nd Division (United States), and 42nd Infantry Division (United States).

Equipment and Artillery Types

American forces employed a mix of domestically produced and Allied-supplied weapons, including the M1917 155 mm gun, the M1902 3-inch field gun, the M1918 155 mm howitzer (Schneider), and captured or lend-lease pieces from the French 75 (Canon de 75 modèle 1897), British QF 18-pounder, and British BL 60-pounder gun. Heavy artillery included railway guns, siege howitzers, and mortars such as the 8-inch howitzer M1917 and the 9.2-inch howitzer. Anti-aircraft responsibilities were met using guns adapted from coastal designs like the M1917 6-inch coast defense gun and early AA mounts influenced by the Gatling gun lineage and developments occurring in Krupp and Vickers design bureaus. Fire-control hardware incorporated innovations from observatories like Verdun, survey techniques from the Ordnance Survey, and indirect-fire solutions influenced by pioneers including Henry Adair and exchanges with officers linked to Ferdinand Foch, Philippe Pétain, and Sir Douglas Haig.

Training and Doctrine

Training centers in the United States—such as Camp Taylor, Camp Sherman, Camp Funston, and Camp Dodge—conducted basic and advanced artillery instruction modeled on curricula from Fort Sill and influenced by staff officers who had studied at the École de Guerre and attended operations with the French Fourth Army and British Third Army. Doctrine emphasized techniques developed during the Battle of the Somme, Battle of Verdun, and Battle of Passchendaele, including creeping barrages, predicted fire, and counterbattery work facilitated by aerial observation from units like the United States Army Air Service and balloon companies similar to those deployed at Châlons-sur-Marne. Fire-control doctrine incorporated forward observer protocols practiced in operations such as the Battle of Belleau Wood and rehearsed with allied liaison officers from the French Aéronautique Militaire and the Royal Flying Corps.

Combat Operations and Campaigns

AEF artillery units supported major operations including the Battle of Saint-Mihiel, the Meuse-Argonne Offensive, and the Second Battle of the Marne (Third Battle of the Marne), coordinating with American infantry divisions such as the 26th Infantry Division (United States), 77th Division (United States), and specialized formations like the Tank Corps (United States) and United States Marine Corps elements in engagements like Belleau Wood. Artillery planning drew on allied precedents set at Étaples and integrated fire plans similar to those used by the French Tenth Army and British Fifth Army. Counterbattery operations targeted German positions from sectors near Saint-Mihiel salient to the Hindenburg Line, with tactical learning taken from battles including Ypres and logistical experience influenced by the supply models of Châlons and ports such as Saint-Nazaire and Le Havre.

Logistics, Ammunition, and Fire Support Coordination

Sustaining artillery required vast logistics networks linking American depots at New York City, Boston, and Philadelphia with French railheads and ports including Brest (France), Cherbourg, and Marseille. Ammunition types ranged from shrapnel and high-explosive rounds used in barrages to gas shells first employed at engagements like Second Battle of Ypres and countered by medical units such as those organized by Harvey Cushing and supported by organizations like the American Red Cross. Fire support coordination involved liaison officers embedded with formations of the French Army of Lorraine and British corps, and used emerging practices from staff work by officers trained at General Staff College and influenced by theorists such as Erich Ludendorff (enemy doctrine) and Julian S. Hatcher (ballistics).

Notable Units and Personnel

Prominent artillery leaders and units included commanders and staff figures with ties to John J. Pershing, brigade and regiment leaders from George S. Patton (early artillery service), Hunter Liggett, Omar Bundy, and artillery specialists whose careers intersected with institutions like Fort Monroe and universities including West Point (United States Military Academy). Units of renown included regiments drawn from the 1st Division (United States), 2nd Division (United States), 42nd Infantry Division (United States), and specialized groups such as railway artillery organizations and trench mortar batteries that later influenced officers who served in the Interwar Period and in planning staffs connected to the National Defense Act of 1920.

Legacy and Postwar Impact

Postwar analyses by commissions and scholars at institutions such as Harvard University, Johns Hopkins University, and the Carnegie Endowment for International Peace examined AEF artillery performance alongside changes in doctrine embodied in revisions at Fort Sill and in the United States Army Field Artillery School. Lessons influenced mechanization programs, the development of the M101 howitzer (later), interwar reforms linked to the National Defense Act, and the careers of officers who later served in conflicts like the World War II campaigns in Normandy, North Africa, and the Pacific War. Histories and collections at repositories including the National Archives and Records Administration and the Smithsonian Institution preserve ordnance, maps, and after-action reports that continue to inform studies at military colleges such as the United States Naval War College and the Army War College.

Category:United States Army artillery