Battles & Wars › Between the wars
Air power and strategic bombing
theory from 1921 (Douhet)· Idea, religion or movement· Strategy & tactics
Mostly agreedGood evidence; some details, dates or numbers uncertain.
The idea that aircraft, by bombing cities, industry and morale far behind the front, could decide wars largely by themselves.
See it on the Battles & Wars map →What happened
In World War I aircraft spotted for artillery, fought duels and bombed cities, as German Zeppelins and Gotha bombers did London. In 1921 Italian general Giulio Douhet argued in The Command of the Air that massed bombers would quickly break a nation's will. Others, such as Billy Mitchell in the US and Hugh Trenchard in Britain, pushed for independent air forces. Guernica in 1937 showed what bombing could do to a town; World War II applied it on a vast scale.
Why it matters
It made civilians direct targets, created independent air forces and long-range bombers, and led to the atomic bombings and today's drones and precision strikes.
How we know
Douhet's and Mitchell's writings, air force records, and postwar studies such as the US Strategic Bombing Survey (1945–46), which measured what bombing actually achieved.
Still debated
Whether strategic bombing ever won a war on its own is still debated; bombed populations often proved more resilient than theorists predicted.
Connections (11)
▸Sherman's March to the Sea foreshadowed the total-war logic of Air power and strategic bombingMostly agreed
The connection
Sherman's 1864 march destroyed railways, crops and factories across Georgia to break the South's ability and will to fight, not just its armies. Air-power theorists made the same argument for bombers: hit the enemy's economy and civilian morale behind the front, and the war ends sooner. Both blurred the line between soldiers and civilians.
When and how
Georgia, November–December 1864, under William Tecumseh Sherman; the logic was revived for aircraft by Douhet in Italy in 1921 and by British and US airmen.
How sure are we?
The parallel is widely noted; Basil Liddell Hart praised Sherman and urged bombing enemy morale in the 1920s. A direct line of influence on air theorists is less clear.
Debates and open questions
Sherman's march destroyed property but killed few civilians, unlike city bombing; whether the label 'total war' fits both equally is debated.
▸World War I launched the age of Air power and strategic bombingWell documented
The connection
Aircraft went from scouting tools in 1914 to fighters, ground-attack planes and bombers by 1918. German Zeppelin and Gotha raids on Britain killed about 1,400 people and caused panic, prompting Britain to create the Royal Air Force in 1918. Theorists built on these lessons to argue that bombers could win future wars.
When and how
The Western Front and British skies, 1914–1918; the RAF, generally counted the first independent air force, was founded April 1, 1918.
How we know
Air-raid casualty records, the 1917 Smuts Report recommending an independent air force, and wartime aircraft production figures.
Debates and open questions
Whether the wartime raids justified the theorists' confident claims is debated; the physical damage was small, but the fear was large.
▸Bombing of Guernica was an early demonstration of Air power and strategic bombingWell documented
The connection
Germany's Condor Legion used Spain to test aircraft and methods, and Guernica showed how explosive and incendiary bombs together could destroy a town. It seemed to confirm theorists' warnings that bombers could devastate cities and terrorize civilians, and it deepened fear of air attack in Britain and elsewhere before World War II.
When and how
Guernica, April 26, 1937; the Condor Legion's chief of staff, Wolfram von Richthofen, directed the operation.
How we know
Richthofen's war diary and Luftwaffe records show bombing methods tried in Spain; similar methods were later used on Warsaw and Rotterdam.
Debates and open questions
Whether Guernica was a deliberate terror test or a tactical strike on a bridge and roads that destroyed the town is debated.
▸Air power and strategic bombing was tested in Battle of BritainWell documented
The connection
Interwar theorists such as Giulio Douhet argued that bombers would always get through and could break a nation alone. The Battle of Britain, the first major campaign fought almost entirely in the air, showed otherwise: radar-guided fighters made daylight bombing too costly, and civilian morale held under the Blitz.
When and how
Skies over southern England and the Channel, July–October 1940: the Luftwaffe under Hermann Göring against RAF Fighter Command under Hugh Dowding.
How we know
Loss tables, Luftwaffe planning documents and British radar logs show how the campaign tested the bomber-alone idea and found it wanting.
Debates and open questions
Some argue the Luftwaffe was never built for strategic bombing, so the battle tested an air force poorly suited to Douhet's theory rather than the theory itself.
▸Air power and strategic bombing reached its extreme in Atomic bombings of Hiroshima and NagasakiWell documented
The connection
Strategic bombing grew through the war: German raids on British cities, Allied raids on Hamburg and Dresden, and from March 1945 US firebombing that burned much of Tokyo and dozens of other Japanese cities. The atomic bombs carried this logic to its extreme: one plane, one bomb, one city.
When and how
Japan, 1945: B-29s of the US Twentieth Air Force, flying from the Mariana Islands, carried out both the firebombing campaign and the two atomic missions.
How we know
US targeting records show Hiroshima, Kokura and other candidate cities were deliberately left off firebombing lists so the new weapon's effect could be measured.
Debates and open questions
Whether the atomic bombs were a moral break with earlier bombing or its continuation is debated; the March 1945 Tokyo raid killed roughly as many as Hiroshima did immediately.
▸Air power and strategic bombing evolved into Drones and precision strikeMostly agreed
The connection
Air-power theorists promised wars won from the sky, but World War II bombers often missed by hundreds of meters or more. Guided bombs, then drones, delivered the accuracy those theorists had assumed. Drones also removed the pilot, making strikes cheaper, longer-lasting and less risky for the attacker.
When and how
Mostly in the US military: laser-guided bombs over Vietnam from 1968, GPS-guided bombs in the 1990s, and the armed Predator drone in 2001.
How sure are we?
Air force accuracy studies show typical miss distances shrinking from about a kilometer in World War II to a few meters with modern guided weapons.
Debates and open questions
Whether precision fulfills Douhet's dream or just makes bombing more efficient is debated; precise weapons alone did not win wars such as Afghanistan.
▸Desert Storm air campaign showed the precision-bombing promise of Air power and strategic bombingMostly agreed
The connection
Interwar theorists such as Giulio Douhet promised bombing could win wars on its own, but World War II and Vietnam bombing fell short. In 1991 precision weapons, stealth and Colonel John Warden's plan, which targeted Iraq's leadership, communications and power as 'centers of gravity', came closer than ever to that promise.
When and how
Planned in August 1990 by Warden's 'Checkmate' office in the Pentagon and General Chuck Horner's staff in Riyadh; carried out January–February 1991.
How sure are we?
Planning documents and the Gulf War Air Power Survey record the strategic targeting; bomb-damage assessments record the results.
Debates and open questions
Did air power 'win' the war? Air Force advocates say largely yes; Army historians stress that a ground offensive was still needed to expel Iraq from Kuwait.
▸Kosovo War and NATO bombing was decided largely by NATO Air power and strategic bombingDebated
The connection
NATO fought the Kosovo War almost entirely from the air, flying about 38,000 sorties over 78 days with no NATO combat deaths. Milošević gave in on June 3, 1999, and NATO troops entered Kosovo without a ground invasion, the case most often cited that air power alone can force a government to yield.
When and how
Serbia, Kosovo and Montenegro, March 24 – June 10, 1999; NATO's supreme commander, US General Wesley Clark, directed Operation Allied Force.
How sure are we?
NATO strike records and after-action reviews document the campaign; later surveys found Serbian forces left Kosovo with most of their tanks intact.
Debates and open questions
Why Milošević quit is debated: bombing of Serbia's power grid and bridges, the growing threat of a ground invasion, or Russia's withdrawal of diplomatic support.
▸Operation Midnight Hammer (US strikes on Iran's nuclear sites) used B-2 bombers, the long reach of Air power and strategic bombingWell documented
The connection
Douhet argued in 1921 that bombers could strike an enemy's vital centers directly, skipping the front lines. Midnight Hammer was a pure example: bombers from Missouri hit buried nuclear sites halfway around the world in one night, relying on stealth while fighters swept ahead for threats.
When and how
Whiteman Air Force Base, Missouri, to Iran and back, June 21–22, 2025: about 37 hours round trip with several aerial refuelings.
How we know
Pentagon briefings, flight-tracking of tankers and decoy bombers, and satellite images of the bombed sites.
Debates and open questions
As with strategic bombing since World War II, whether air strikes alone can achieve political goals, here ending Iran's nuclear ambitions, is doubted.
▸Warplanes (military aircraft) inspired the theory of Air power and strategic bombingWell documented
The connection
World War I bombing raids led theorists to argue that planes could win wars on their own. Italian general Giulio Douhet's 1921 book The Command of the Air said bombers should strike cities and industry. In the US, Billy Mitchell sank a captured German battleship with bombs in 1921, and in Britain Hugh Trenchard built the RAF around bombing.
When and how
Italy, 1921 (Douhet); off Virginia, July 1921 (Mitchell sinks the Ostfriesland); Britain, 1918–30 (Trenchard).
How we know
Their books, testimony and air force doctrine documents, which draw directly on wartime air experience.
Debates and open questions
Whether bombing can win a war alone is still debated; World War II suggested it could cripple an enemy but not conquer one.
▸Ford's Willow Run B-24 bomber plant built nearly a bomber an hour for Air power and strategic bombingWell documented
The connection
Air-power theorists had argued since the 1920s that fleets of bombers could win wars by destroying enemy industry. That required bombers in huge numbers. Willow Run, peaking at roughly a B-24 an hour in 1944, showed that US industry could supply them at a rate no rival could match.
When and how
Ypsilanti, Michigan, with peak output in 1944; the US Army Air Forces' bomber campaigns over Germany and Japan.
How we know
Ford and Army production logs record the output, which peaked in 1944 at several hundred bombers a month.
Debates and open questions
Whether strategic bombing achieved what its theorists promised, at its huge cost in aircrews and civilian lives, is still debated.