This is one of the pictures of the dresden bombing.

Dresden bombing, on the 13th of febuary 1945, arthur harris, decided to bomb Dresden, the population at first was 650,000 people, durring this war 35,000 people were killed. jerman sources argued that 100,000 were killed, the aircraft the night of the bombing made 1600 acres get blown up.

The practice came to prominence during the Second World War with the use of large numbers of unguided gravity bombs, often with a high proportion of incendiary bombs, to effect indiscriminate bombing of the target region - either to destroy personnel and/or materiel, or as a means to demoralize the enemy (see terror bombing). The high explosive bombs were often on timers and used to intimidate or kill firemen putting out the fires caused by the incendiaries. This, in high enough concentration was capable of producing a firestorm effect.
Initially, this was effected by multiple aircraft, often returning to the target in waves. Nowadays, a large bomber or missile can be used to create the same effect on a small area (an airfield, for example) by releasing a relatively large number of smaller bombs. (WICKAPEDIA)

BERLIN - The Allied firebombing of the eastern German city of Dresden in 1945 killed no more than 25,000 people — far fewer than scholars' previous estimates running as high as 135,000 — a special commission has found.
The team of a dozen experts, including university professors, archivists and military historians, said Wednesday that four years of research so far has confirmed 18,000 deaths and showed that police and city administrators at the time believed there were about 25,000 victims of the bombing.
Since the end of World War II, scholars have varied in their tally of people killed by waves of British and U.S. bombers on Feb. 13-14, 1945. Some estimates have run to 135,000 or more. In his 2005 book on the bombing, British historian Frederick Taylor argued the real toll was between 25,000 and 40,000.(msnbc)