Mölders joined the II ./ 2 infantry regiment of the Reichswehr in Allenstein, East Prussia on 1 April 1931, serving as an officer cadet in the infantry.

After the First World War in the aftermath of the East Prussian plebiscite, carried when Red Army was marching on Warsaw-Polish – Soviet War in 1920, the region remained in Germany, as in the Warmian district of Allenstein ( Olsztyn ) 86, 53 % and in the district of Rössel ( Reszel ) 97, 9 % voted for Germany.

A Prussian census recorded a population of 1, 770 people, predominantly farmers, in Allenstein, which was administered within the Province of East Prussia.

In 1920 during the East Prussian plebiscite, Allenstein voted to remain in German East Prussia instead of becoming part of the Second Polish Republic.

The Teutonic Knights began the construction of Ordensburg castle in 1347 as a stronghold against the Old Prussians, and the settlement of Allenstein was first mentioned the following year.

The German name Allenstein meant a castle on the Alle River.

Allenstein was incorporated into the Kingdom of Poland during the Polish-Lithuanian-Teutonic War in 1410 and in 1414 during the Hunger War, but was returned to the monastic state of the Teutonic Knights after hostilities ended.

The Second Peace of Thorn ( 1466 ) allocated Allenstein and the Bishopric of Warmia as part of Royal Prussia under the sovereignty of the Crown of Poland.

From 1516 – 21, Nicolaus Copernicus lived at the castle as administrator of Allenstein and Mehlsack ( Pieniężno ); he was in charge of the defenses of Allenstein and Warmia during the Polish-Teutonic War of 1519 – 21.

Allenstein was sacked by Swedish troops in 1655 and 1708 during the Polish-Swedish wars, and the town's population was nearly wiped out in 1710 by epidemics of bubonic plague and cholera.

Allenstein was annexed by the Kingdom of Prussia in 1772 during the First Partition of Poland.

Allenstein became part of the German Empire in 1871 during the Prussian-led unification of Germany.

The city became the capital of Regierungsbezirk Allenstein, a government administrative region in East Prussia, in 1905.

From 1818 – 1910 the city was administered within the East Prussia Allenstein District, after which it became an independent city.

Shortly after the outbreak of World War I, troops of the Russian Empire captured Allenstein in 1914, but it was recovered by the Imperial German Army in the Battle of Tannenberg.

The football club SV Hindenburg Allenstein played in Allenstein from 1921 – 45.

After the Nazi seizure of power in 1933, Poles and Jews in Allenstein were increasingly persecuted.

In 1935 the Wehrmacht made the city the seat of the Allenstein Militärische Bereich.

Allenstein was plundered and burnt by the invading Soviet Red Army on 22 January 1945, as the Eastern Front reached the city.

Although the battle actually took place close to Allenstein ( Olsztyn ), General Erich Ludendorff's aide, Colonel Max Hoffmann, suggested naming it after Tannenberg, in the interest of Pan-German ideology, to counter the defeat of the Teutonic Knights at the Battle of Grunwald ( Tannenberg ) in 1410 by the Poles, Lithuanians and Tatars.

Their only successes were in the center, where XIII Russian Corps advanced toward Allenstein unopposed.

In order to help stabilize the line, Samsonov ordered the seemingly successful XIII Corps to abandon Allenstein and turn southwest to help break through at Tannenberg.

Frauenburg's cathedral chapter then elected the aged Canon Johannes ( Jan ) Hanowski, a German of Polish ethnicity and long-term archpriest of Allenstein ( today's Olsztyn ), as capitular vicar, i. e. provisional head of the see, on 28 July 1945.

Like many Prussian officers serving in Russia, he joined the Russian-German Legion in 1813.

After 1871 there appeared resistance among the Masurians towards Germanization efforts, the so called Gromadki movement was formed which supported use of Polish language and came into conflict with German authorities ; while most of its members viewed themselves as loyal to Prussian state, a part of them joined the Pro-Polish faction of Masurians.

To solidify Prussian hegemony, Prussia and several other North German states joined the North German Confederation in 1867 ; King Wilhelm I served as its President, and Bismarck as its Chancellor.

Pomesanians joined the other Prussian clans during the First Prussian Uprising ( 1242 – 1249 ), but was the only clan not to participate in the Great Prussian Uprising ( 1260 – 1274 ).

At 17: 15, the Prussian 4th Guards Infantry Brigade joined the advance followed at 17: 45 by the Prussian 1st Guards Infantry Brigade.

In 1841, Engels joined the Prussian Army as a member of the Household Artillery.

Later when Prussian troops came to Kaiserlautern to suppress an uprising there, Engels joined a group of volunteers under the command of August Willich, who were going to fight the Prussian troops.

In 1451 the town council joined the Prussian Confederation that was fighting against the Teutonic Order, but bishop Kaspar Linke expelled the councilors and confiscated their property.

In 1440, Grudziądz joined the Prussian Confederation and formally asked the King of Poland, Casimir IV Jagiellon to join Poland.

After the major state border changes ( modern Vorpommern and Stettin joined the Prussian state after a conflict with Sweden ) Stolp was only an administrative centre of the Kreis within the Regierungsbezirk of Köslin.

After Napoleon's final defeat in 1815, the surviving member states of the defunct Holy Roman Empire joined to form the German Confederation ( Deutscher Bund ) — a rather loose organization, especially because the two great rivals, the Austrian Empire and the Prussian kingdom, each feared domination by the other.

His bad luck continues, though, as he is joined on the road by a Prussian officer.

At age 18, Latrobe spent several months traveling around Germany, and then joined the Prussian army, becoming close friends with a distinguished officer in the army of the United States.

In 1440 the town joined the Prussian Confederation.

The Army of Condé joined with an allied army of Prussian and Austrian soldiers led by Duke of Brunswick in an unsuccessful invasion of France in 1792.

He disapproved of the union between the Lutheran and the Reformed churches, which had been accomplished by the Prussian government in 1817, and in 1833 he joined the Old Lutherans.

In 1911 Guderian joined the 3rd Telegraphen-Battalion of the Prussian Army Signal Corps.

After law school, he joined the Prussian Interior Ministry in 1933 and was assigned to the newly-formed Geheime Staatspolizei, or Gestapo.

He joined the Prussian interior ministry in 1930 and was promoted to an advisory position in the Prussian police in 1932, targeting political radicals, both Communists and Nazis.