Military ranks: 256 killed (159 in battle, 28 missing, 69 died of their wounds); 333 captured; unspecified number of wounded The Bulgarian capital of Sofia suffered a series of Allied bombing raids during World War II, from mid 1941 to early 1944.

On 6 April, Yugoslav Dornier Do 17 aircraft bombed the industrial section of Sofia and Kyustendil.

About 90 bombs were released over the Hadzhi Dimitar, Industrialen, Malashevtsi and Voenna rampa quarters, another 90 hit Vrazhdebna Airport and the nearby villages.

One of the most destructive raids followed on 20 December, with over 113 buildings being razed to the ground, the belt line being cut off, with 93 people injured.

[3] A day bombing in the Sofia railway junction area was executed on 30 December 1943, injuring 96.

Sofia suffered another bombing on 10 January 1944, carried out consecutively by 143 American B-17s during the day and 44 RAF Wellingtons (during the night).

Some 450 American and British heavy bombers escorted by 150 Allied fighters attacked the city center of Sofia, destroying 3575 buildings.

[5] Among the historic buildings destroyed were several schools and hotels, as well as the State Printing House, the Regional Court, the Small Baths and the National Library.

[4] Captain Gerhard Wengel [bg] (1915–1944) was a German Luftwaffe pilot (kommandeur I/JG 5) who was killed in the sky over Radomir, while defending Sofia.

[6] He was the only foreign pilot killed in battle while defending Bulgarian airspace during World War II.