B6, key topic 2 - Land, air and sea warfare, 1939–45

Blitzkrieg In Europe

Blitzkrieg means "lightning war", but it was not magic and it was not simply "using tanks". It was a method of fast, concentrated attack that tried to break an enemy's ability to respond. German forces used tanks, motorised infantry, artillery, aircraft and radio communication to punch through a weak point, move behind the enemy front line and disrupt headquarters, supply routes and communications.

The aim was to avoid the slow deadlock associated with the First World War. Instead of pushing evenly along a whole front, German commanders tried to create local superiority at a decisive point. Once the breakthrough was made, armoured forces moved quickly into the enemy rear while aircraft attacked roads, bridges, airfields and troop concentrations. This could leave enemy armies cut off before they had time to organise a stable defence.

Germany used these methods successfully against Poland in 1939 and in western Europe in 1940. The fall of France was especially significant because France had a large army and strong defences, but German movement through the Ardennes and towards the Channel split Allied forces and helped force the British evacuation from Dunkirk.

There were limits. Blitzkrieg worked best when the enemy was surprised, poorly coordinated or unable to recover quickly. It did not guarantee victory against every opponent. Britain was protected from land invasion by the Channel and the Royal Navy, while the Soviet Union's size, resources and ability to absorb huge losses meant that Germany became trapped in the long war it had tried to avoid.

Misconception check: do not write that Blitzkrieg was just "new weapons". Tanks, aircraft and artillery already existed. The change was in how these weapons were combined, concentrated and coordinated.

Battle Of Britain And Blitz

After France fell in 1940, Germany could not use Blitzkrieg against Britain unless it first gained control of the air and made an invasion possible. That made the Battle of Britain a key example of changing air warfare. The Luftwaffe aimed to destroy RAF Fighter Command, weaken radar and airfields, and open the way for Operation Sea Lion, the planned invasion of Britain.

Britain's defence was not only heroic pilots in Spitfires and Hurricanes. It was a system:

The battle showed that air warfare was now about information, coordination and production as well as planes. Germany could inflict serious damage, but it did not destroy Fighter Command. Without air superiority, invasion became too dangerous.

The Blitz followed from this failure and from Germany's shift towards bombing cities. From September 1940 to May 1941, the Luftwaffe attacked London and many other British towns and cities. Ports, docks, factories and transport links were important targets, but civilians were directly affected because modern bombing could not be neatly separated from urban life.

The significance of these events is double. First, air power could decide whether land invasion was possible. Second, civilians were now in the front line of war. The home front was not just supporting the war effort; it was being attacked as part of the war.

Strategic Bombing And V-Weapons

The air war then moved into a wider contest of strategic bombing. Strategic bombing means using air power to attack an enemy's ability or will to continue fighting, often by striking industry, transport, cities and morale far behind the front line.

Britain and the United States developed a major bombing offensive against Germany. RAF Bomber Command carried out night bombing, while the US Army Air Forces increasingly carried out daylight raids. At first, leaders hoped for precise attacks on military and industrial targets. In practice, navigation, weather, anti-aircraft fire and night operations made precision difficult. By 1942, British policy accepted area bombing: attacking whole urban areas that contained factories, workers, transport and housing.

The Allied bombing campaign was significant, but it was also controversial.

Germany's V weapons were a different form of air-age warfare. The V-1 flying bomb and V-2 rocket were launched mainly in 1944-45 against targets such as London and Antwerp. They were "vengeance weapons": intended to terrorise civilians, disrupt ports and suggest that Germany still had technological power even as it was losing the conventional war.

The V-1 was an early pilotless flying bomb. It could be intercepted by fighters and anti-aircraft guns, although not always. The V-2 was far harder to stop once launched because it was a ballistic rocket. Its psychological effect was severe because there was little warning.

However, V weapons did not change the outcome of the war. They were inaccurate, arrived too late, and could not replace lost air superiority, armies, fuel or industrial capacity. They show technological innovation, but also the limits of a "wonder weapon" when the wider strategic position is collapsing.

Model mini-paragraph:

Allied bombing was significant because it made air power a direct attack on Germany's war economy and home front, forcing Germany to defend its cities and industries. However, it did not win the war by itself because bombing was often inaccurate and Germany continued fighting until Allied armies advanced into German territory. This means strategic bombing was important as part of combined pressure, not as a single decisive weapon.

U-Boats In The Atlantic

Sea warfare in 1939-45 was not mainly about one dramatic battleship duel. The central struggle was control of supply routes. Britain depended on food, fuel, raw materials, troops and equipment crossing the Atlantic. Later, the United States used the Atlantic to move supplies and forces for the defeat of Germany. If German U-boats could sink enough shipping, they could weaken Britain's war effort and delay or prevent Allied offensives.

U-boat warfare developed during the war. German submarines used "wolf pack" tactics, where groups of U-boats searched for convoys, shadowed them and attacked in groups, often at night. This made convoys dangerous places, especially when air cover was weak in the mid-Atlantic gap.