Allies carry out day and night attacks on German strongholds.
Flying Fortresses carry out their first raids on Berlin, Germany.
Allied troops enter Cologne, Germany.
A new massive bombs 'Ten Ton Tess' used for raid on Bielefeld viaduct, Germany.
Royal Air Force bombs Cologne in Thunderbolt raids.
Intensified air raids on Germany.
Allies launch great air offensive over Germany.
No more bombs will fall on Europe.
USAAF and RAF bombing raids on Germany and France.
Night air raid of Essen, Germany.
British and American day and night air raids of Hamburg, Germany.
Night and day bombing raids on Dresden by British and American air force.
American bombers continue their daylight air raids on Germany.