Question: The bomb that Hubert Schiffer survived was dropped during what war?

Context paragraphs:
Little Boy: "Little Boy" was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B-29 Superfortress "Enola Gay", piloted by Colonel Paul W. Tibbets, Jr., commander of the 509th Composite Group of the United States Army Air Forces.  It was the first atomic bomb to be used in warfare.  The Hiroshima bombing was the second artificial nuclear explosion in history, after the Trinity test, and the first uranium-based detonation.  It exploded with an energy of approximately 15 ktonTNT .  The bomb caused significant destruction to the city of Hiroshima and its occupants.

SC50 bomb: The SC50 bomb (Sprengbombe Cylindrisch 50) was a type of drop ordnance or free fall bomb built by Germany during World War II.  Used as a general purpose bomb, it had a one-piece drawn steel body and its total weight was 48 to 55 kg.  It was dropped in the early 1940s on London.  The SC-50 was a German bomb dropped by the Luftwaffe on central London.

Schiffer Publishing: Schiffer Publishing Ltd. (also known as Schiffer Military History) is a family-owned publisher of nonfiction books.  Based in Atglen, Pennsylvania, its coverage includes antiques, architecture and design, arts and crafts, collectibles, lifestyle, and militaria.  Schiffer's military imprint has been criticized for proving a distorted portrayal of the German armed forces during World War II.

Mark 84 bomb: The Mark 84 or BLU-117 is an American general-purpose bomb, it is also the largest of the Mark 80 series of weapons.  Entering service during the Vietnam War, it became a commonly used US heavy unguided bomb (due to the amount of high-explosive content packed inside) to be dropped.  By size, it is second only to the 15000 lb BLU-82 "Daisy Cutter" then in service and presently third only to the 22600 lb GBU-43/B Massive Ordnance Air Blast bomb (MOAB) currently in service .  Pilots flying the F-117 Nighthawk over Iraq during the First Gulf War nicknamed it the "Hammer" (albeit fitted with the GBU-27 Paveway III kit for use specially by the "Nighthawks"), for its considerable destructive power and blast radius.

Earthquake bomb: The earthquake bomb, or seismic bomb, was a concept that was invented by the British aeronautical engineer Barnes Wallis early in World War II and subsequently developed and used during the war against strategic targets in Europe.  A seismic bomb differs somewhat in concept from traditional bombs, which usually explode at or near the surface, and destroy their target directly by explosive force.  In contrast, a seismic bomb is dropped from high altitude to attain very high speed as it falls and upon impact, penetrates and explodes deep underground, causing massive caverns or craters known as "camouflets", as well as intense shockwaves.  In this way, the seismic bomb can affect targets that are too massive to be affected by a conventional bomb, as well as damage or destroy difficult targets such as bridges and viaducts.

Jacob Beser: Jacob Beser (May 15, 1921 – June 16, 1992) was a lieutenant in the United States Army Air Forces who served during World War II.  Beser was the radar specialist aboard the "Enola Gay" on August 6, 1945, when it dropped the Little Boy atomic bomb on Hiroshima.  Three days later, Beser was a crewmember aboard "Bockscar" when the Fat Man bomb was dropped on Nagasaki.  He was the only person to have served as a strike crew member of both of the 1945 atomic bomb missions.

Butterfly Bomb: A Butterfly Bomb (or Sprengbombe Dickwandig 2 kg or SD2) was a German 2 kilogram anti-personnel submunition used by the Luftwaffe during the Second World War.  It was so named because the thin cylindrical metal outer shell which hinged open when the bomblet deployed gave it the superficial appearance of a large butterfly.  The design was very distinctive and easy to recognise.  SD2 bomblets were not dropped individually, but were packed into containers holding between 6 and 108 submunitions e.g. the AB 23 SD-2 and AB 250-3 submunition dispensers.  The SD2 submunitions were released after the container was released from the aircraft and had burst open.  Because SD2s were always dropped in groups (never individually) the discovery of one unexploded SD2 was a reliable indication that others had been dropped nearby.  This bomb type was one of the first cluster bombs ever used in combat and it proved to be a highly effective weapon.  The bomb containers that carried the SD2 bomblets and released them in the air were nicknamed the "Devil's Eggs" by Luftwaffe air and ground crew.

Hubert Schiffer: Father Hubert F. Schiffer (1915 – March 27, 1982, in Frankfurt, West Germany) was a German Jesuit who survived the atomic bomb "Little Boy" dropped on Hiroshima.

M-121 (bomb): The M121 bomb was a very large air dropped bomb used by the U.S. military during the Vietnam War.  Originally developed from the British world war II era Tallboy bomb to be dropped from the Convair B-36 bomber, it weighed 10,000 lb (4,500 kg) and contained an 8,050 lb (3,650 kg) Tritonal warhead.  Production of the M121 ceased in 1955, but stockpiles were retained until the Vietnam War.

The French Counts of St Hubert, Saskatchewan: The French Counts settled in St. Hubert, Saskatchewan which was located on Pipestone Creek, 14 km south west of Whitewood, Saskatchewan.  The French Counts of St Hubert stayed in the area between 1884 and the early 1900s, before World War I. St. Hubert is classified presently as an unincorporated area means there are five or more dwellings establishing a settlement, and the civic government is administered by the rural municipality of Silverwood No. 123.  Dr. Rudolph Meyer was the initial European to arrive followed by others who established ranches in the vicinity of St. Hubert and Whitewood.

Supporting paragraphs: Hubert Schiffer Little Boy
Answer: World War II