During WWII, an alpine team composed of Pierre Chevalier, Fernand Petzl, Charles Petit-Didier and others explored the Dent de Crolles cave system near Grenoble, France which became the deepest explored cave in the world (- 658m ) at that time.

During the Kingdom of Yugoslavia, censuses were conducted in 1931 and 1921 ; the census in 1941 was never conducted due to the outbreak of WWII.

During WWII and beyond, RCA set up several new divisions, for defense, space exploration and other activities.

* During WWII, Velvalee Dickinson, a spy for Japan in New York City, sent information to accommodation addresses in neutral South America.

During WWII, the FBI investigated 19, 649 cases of sabotage and concluded the enemy had not caused any of them.

During WWII, the Allies committed sabotage against the Peugeot truck factory.

During WWII, British subject Eddie Chapman, trained by the Germans in sabotage, became a double agent for the British.

During WWII the Jewish Savoye family was sent to concentration camps by the Nazis who took over the house and used it for storage.

During WWII, the Este Castle, adjacent to the Corso Roma, now known as the Corso Martiri della Libertà, was the site of an infamous massacre in 1943.

During this period after WWII many of Africa's colonies had gained their independence, however, those that assumed power continued to control the population the same as their previous oppressors.

During WWII the 1700 and 1800 ranges were also used for operational squadrons.

During WWII, a German U-boat sailed into Castries harbor and sank two allied ships.

During WWII, after the Axis aggression against Yugoslavia, Italy created the " Governatorato di Dalmazia " ( from 1941 to September 1943 ), so the Kingdom of Italy annexed temporarily even Spalato ( Split ), Cattaro ( Kotor ) and most of coastal Dalmatia.

During WWII, most officers were white and most black troops still served only as truck drivers and as stevedores.

During the early days of WWII ( i. e., before the US entered the war ), a small number of Americans of German origin returned to Germany ; generally they were immigrants or children of immigrants, rather than descendants of migrations more distant in time.

During WWII Pinewood was requisitioned and subsequently the Crown Film Unit, Army Film and Photographic Unit, RAF Film Unit and Polish Air Force Film Unit were based there.

During WWII, GIs from Massachusetts who were stationed overseas shared the cookies they received in care packages from back home with soldiers from other parts of the U. S. Soon, hundreds of GIs were writing home asking their families to send them some Toll House Cookies, and Wakefield was soon inundated with letters from around the world asking for her recipe.

During WWII Japan experimented with " Balloon Bombs " that floated across the pacific to the U. S. One of these bombs dropped and exploded near Timnath, Colorado making it the only continental U. S. town to bombed by a foreign country.

During WWII Barksdale trained pilots, navigators, and bombardiers.

During the Korean War, the Lima Tank Depot resumed manufacturing, at a level expanded from WWII standards.

During WWII Roddis Lumber and Veneer produced plywood and other composites and was " the allies ' largest pre-fabricator of wood for Liberty Ships.

During WWII it was a North American Aviation plant that produced the P-51C and K Mustang variants.

During WWII, the European branches of O. T. O.

During World War II ( WWII ), both the British and the Americans recruited codebreakers by placing crossword puzzles in major newspapers and running contests for who could solve them the fastest.

During WWII he was stationed by the Army as a telephone linesman in Burma.

During a brief marriage to Wallace J. Benedict which ended in divorce, Eastman lived in Milwaukee and managed the unsuccessful 1912 Wisconsin suffrage battle.

During the pre-Inca period, people lived in clans, which formed great tribes, some allied with each other to form powerful confederations, as the Confederation of Quito.

During the early 1580s it is likely that the Earl lived mainly at one of his Essex country houses, Wivenhoe, which was sold in 1584.

During this time, Cleveland lived simply in a boarding house ; although his income grew sufficient to support a more lavish lifestyle, Cleveland continued to support his mother and younger sisters.

During the Middle Ages, the Eastern Roman Empire lived on in Southeastern Europe, though modern historians refer to this state as the Byzantine Empire as the state was Greek, and not Latin, in language and culture.

During this time, he lived at the Seleucid court, where he acted as military adviser to Antiochus III in his war against Rome.

During the late medieval period, King Henry V of England ( lived 1387-1422 ) ordered the use of the English of his day in proceedings before him and before the government bureaucracies.

During the 1890s Albéniz lived in London and Paris.

During this time, he lived on and off with De Warens, whom he idolized and called his " maman ".

During Justinian's reign, the Balkans suffered from several incursions by the Turkic and Slavic peoples who lived north of the Danube.

During his childhood, he emigrated with his family to South Africa, where he lived from age four to eight ( 1948 – 1952 ).

During Stalin's rule they lived in the Kremlin at the Horse Guards.

During this period Sterne never lived in one place for more than a year.

During this time, strict programs imposed to satisfy demands of the International Monetary Fund brought increased hardship upon the country's population while elites close to the government supposedly lived in growing wealth.

During prehistoric times there was a succession of cultures that flourished in the land of present-day Moldova from the end of the Ice age up through the Neolithic Age, the Copper Age, the Bronze Age, and the beginning of the Iron Age, when historical records begin to be made about the people who lived in these lands.

During her early childhood, the Mitchell family lived in a two-story Victorian house on Jackson Hill, east of downtown Atlanta.

During the 19th century modernist Catholics too came generally to accept that the author must have lived after the time of Proclus.

During the first few months of his pontificate he lived in the Vatican, but in the autumn of 1285 he removed to the magnificent palace he had just erected on the Aventine.

During summer, Passenger Pigeons lived in forest habitats throughout North America east of the Rocky Mountains from eastern and central Canada to the Northeastern United States.

During this period, most people lived a hunter-gatherer lifestyle and were, of necessity, constantly on the move.

During the later part of their marriage they lived in a house partly designed by James himself called Delaford Park situated in Iver, Buckinghamshire, a location close enough to Pinewood Studios to allow him to return home for lunch whilst filming.

During the 20th century, the meaning of the term was expanded to refer not only to seaborne raiders from Scandinavia, but secondarily to any Scandinavian who lived during the period from the late eighth to the mid-11th centuries, or more loosely from c. 700 to as late as about 1100.

During the campaign, Martin Van Buren's running mate Richard Mentor Johnson was accused of having lived with a black woman.

During Reconstruction, Wilson lived in Columbia, South Carolina, the state capital, from 1870 – 1874, where his father was professor at the Columbia Theological Seminary.

During the harsh winter of 1798 – 99, Wordsworth lived with Dorothy in Goslar, and, despite extreme stress and loneliness, he began work on an autobiographical piece later titled The Prelude.