During the war, we set up schools for the teaching of psychological warfare, which included the teaching of propaganda, both black and white and the various shades of grey in between.

During the war it was in constant use by the wagon trains transporting supplies from the railhead at Grafton to the troops operating in the interior.

During the five-month lull, civil war smoldered and flickered throughout the Congo.

During the war, Congress exercised an unprecedented level of political, diplomatic, military and economic authority.

During Angola's civil war Cuban forces fought to install a Marxist-Leninist MPLA-PT government, against Western-backed UNITA and FLNA guerrillas and the South-African army.

During the war, the Azeri armed forces were also aided by Turkish military advisers, and Russian, Ukrainian, Chechen and Afghan mercenaries.

During his short reign, peace was established both at home and abroad, finances were well regulated, and the various administrative services were placed on a basis that afterwards enabled Spain to pass through the disastrous war with the United States without the threat of a revolution.

During his reign, Spain lost its last colonies in the Americas ( Cuba and Puerto Rico ) and the Philippines ; fought and, after several setbacks, won a war in Morocco ; witnessed the start of the Spanish Generation of 1927, and endured the dictatorship of Miguel Primo de Rivera.

During the civil war following the death of Eric III of Denmark in 1146, Absalon travelled abroad to study theology in Paris, while Esbern fought for Valdemar's ascension to the throne.

During the Danish civil war, Denmark had been open to coastal raids by the Wends.

During the Hellenistic and Roman periods, many of the existing buildings in the area of the Acropolis were repaired, due to damage from age, and occasionally, war.

During the war years aircraft components were produced.

During the 1st World War British prisoners of war who had been captured at Gallipoli were housed here in an empty Armenian church at the foot of the rock.

During the 1917 Russian Revolution, Nimzowitsch was in the Baltic war zone.

During the war, Nin sent her books to Frances Steloff of the Gotham Book Mart in New York for safekeeping.

During the Civil War, the Confederate army established Camp Sumter to house incoming Union prisoners of war.

During the war, Pakistan supported Bosnia while providing technical and military support to Bosnia.

During the Civil war, soldiers from different parts of the United States played baseball together, leading to a more unified national version of the sport.

During the Japanese occupation, the Dayaks played a role in guerilla warfare against the occupying forces, particularly in the Kapit Division, where headhunting was temporarily revived towards the end of the war.

During the First World War, on the Western front, the two sides had been locked in a trench war, where kill zones by overlapping fire of machine guns and barbed wire prevented either side from breaking through.

During the war, the Condor Legion undertook the bombing of Guernica which had a tremendous psychological effect on the populations of Europe.

During the First World War the German army used horses for logistics, 1. 4 million of them, in the 1939 – 45 war it used 2. 7 million horses.

During World War II, the company diverted several resources to support the war effort and relinquished its West Coast markets to conserve rail car space.

During the war, an Army base, Camp Ashby, was temporarily sited in Berkeley.

During the 1892 – 1894 war between the Congo Free State and the Swahili-Arab city-states of Nyangwe and Kasongo in Eastern Congo, there were reports of widespread cannibalization of the bodies of defeated Arab combatants by the Batetela allies of Belgian commander Francis Dhanis.

During the Tsarist times, the Ainu living in Russia were forbidden from identifying themselves as such, since the Imperial Japanese officials had claimed that all the regions inhabited by the Ainu in the past or present, are a part of Japan.

During the Sino-Japanese War ( 1937 – 1945 ) and World War II ( 1939 – 1945 ), the Special Research Units of the Imperial Japanese Army, such as Unit 731, conducted human experimentation on thousands of Chinese, among others.

During this brief era, when China was in all respects a multi-state system, five regimes rapidly succeeded one another in control of the old Imperial heartland in northern China.

During Heizei's reign, the bodyguards were reorganized ; the existing Imperial Bodyguards became the Left Imperial Bodyguards, while the Middle Bodyguards became the Right Imperial Bodyguards.

* 1937 – Yekatit 12: During a public ceremony at the Viceregal Palace ( the former Imperial residence ) in Addis Ababa, Ethiopia, two Ethiopian nationalists of Eritrean origin attempt to kill viceroy Rodolfo Graziani with a number of grenades.

During World War I and the rise of Germanism, the ( Svecomans ) began covert collaboration with Imperial Germany, and from 1915 – 1917 a " Jäger " ( Jääkärit ) battalion consisting of 1, 900 Finnish volunteers was trained in Germany.

During his Danube sojourn ( Drinkwater suggests in 255 or 256 ) he proclaimed his elder son Valerian II Caesar and thus official heir to himself and Valerian I ; the boy probably now joined Gallienus on campaign and when Gallienus moved west to the Rhine provinces in 257 remained behind on the Danube as the personification of Imperial authority.

During the late 13th century and first half of the 14th century, Chinese under the Mongol-controlled Yuan Dynasty were not allowed to enter higher posts of government ( reserved for Mongols or other ethnic groups from Central Asia ), and the Imperial examination was ceased for the time being.

During World War I, the Imperial Army Air Service utilised a wide variety of aircraft, ranging from fighters ( such as those manufactured by Albatros-Flugzeugwerke and Fokker ) to reconnaissance aircraft ( Aviatik and DFW ) and heavy bombers ( Gothaer Waggonfabrik, better known simply as Gotha, and the Zeppelin-Staaken R. VI " giant " heavy bomber ).

* 1942 – During the Battle of the Coral Sea, United States Navy aircraft carrier aircraft attack and sink the Japanese Imperial Navy light aircraft carrier Shōhō.

During World War I, the Battle of Tannenberg and the First and Second Battle of the Masurian Lakes between Imperial Germany and the Russian Empire took place within the borders of Masuria in 1914.

During the 20th century, Imperial Japan and Nazi Germany ( towards Russian POW ) were notorious for atrocities against prisoners during World War II.

During the first part of the Shōwa era, the governments of Imperial Japan launched a string of policies to promote total war effort against China or occidental powers and increase industrial production.

During the unsuccessful siege of Nuremberg, in 1632, civilians and soldiers in both the Swedish and Imperial armies succumbed to typhus and scurvy.

During the course of the war the Imperial Russian and Imperial Japanese navies would launch nearly 300 torpedoes at each other, all of them of the " self propelled automotive " type.

During the Great Northern War, plague stricken Tallinn along with Swedish Estonia and Livonia capitulated to Imperial Russia in 1710, but the local self-government institutions ( Magistracy of Reval and Chivalry of Estonia ) retained their cultural and economical autonomy within Imperial Russia as the Duchy of Estonia.

** Yekatit 12: During a public ceremony at the Viceregal Palace ( the former Imperial residence ) in Addis Ababa, Ethiopia, two Eritrean nationalists attempt to kill viceroy Rodolfo Graziani with a number of grenades.

During World War II, the region was invaded by the Japanese Imperial Army and included in the Greater East Asia Co-Prosperity Sphere.

During his first seven years as Emperor, Otto II was constantly occupied with maintaining Imperial power against internal rivals and external enemies.

During the journey, in late June or early July 980, the Empress Theophanu gave birth to the Imperial couple's their only son: Otto III.