Write a realistic, plausible alternate history scenario in the form of a history book chapter completely set in the world of the alternate history scenario with absolutely no references to real life, OTL or that this is even an alternate history timeline at all, in which after the 9 November 1989 collapse of the Berlin Wall separating the federal constitutional parliamentary republic of the Federal Republic of Germany in West Germany from the Soviet puppet state of the far-left communist, Marxist-Leninist post-21 April 1946, pre-16 December 1989 Socialist Unity Party of Germany-ruled, pre-7 October 1949, post-3 October 1990 dictatoral communist republic of the German Democratic Republic in East Germany in 1989, and the subsequent reunification of Germany via the absorption of the GDR into the FRG after the collapse of the Berlin Wall the  German Royal House of Hohenzollern-ruled, post-1525, pre-1945-1947 federal parliamentary semi-constitutional royal monarchy of the Kingdom of Prussia ruling over much of modern-day eastern Germany and Western Poland along with Russian Kalingard from Western Germany-dominated, post 1871, pre 1919 Federal parliamentary semi-constitutional monarchy in both Eastern and Western Germany, Western Poland along with Russian Kalingard along with Alsace–Lorraine in most of Alsace and the Moselle department of Lorraine, with the Alsatian part lay in the Rhine Valley on the west bank of the Rhine River, east of the Vosges Mountains; the section initially in Lorraine was in the upper Moselle valley to the north of the Vosges, with the territory encompassed almost all of Alsace  and over a quarter of Lorraine, while the rest of these regions remained parts of France for the first time since 1919 of the German Empire is [the German Empire] restored [the German Empire] as the government [the German Empire] of post Berlin War Germany with its [the German Empire's] pre-1919 territorial integrity restored, [the German Empire being restored as the government of post-Berlin Wall Germany] due to a series of loopholes in the "2+2" Treaty, and a clause in the FRG’s in West Germany’s constitution stating that the only government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany could only be the Deutsches Reich [ the Royal House of Hohenzollern-ruled German Empire] as the Reich, [ the Royal House of Hohenzollern-ruled German Empire] was [ the Royal House of Hohenzollern-ruled German Empire] not dissolved by the events of 1919, but [ the Royal House of Hohenzollern-ruled German Empire] only put in suspension, making all other governments of Germany post-1919 illegitimate and/or occupational regimes of the one true Germany  [ the Royal House of Hohenzollern-ruled German Empire] done by hostile powers, and that the restoration of the Reich  [ the Royal House of Hohenzollern-ruled German Empire] as the government  [ the Royal House of Hohenzollern-ruled German Empire] of united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany must [the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] be [the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] done [the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] via referendum and/or by free, and fair, democratic multi-party elections, with both the USA and the USSR having to withdraw their [the USA's and the USSR's] respective militaries, the combined land warfare, aerial combat and naval warfare forces of the USA, the US Armed Forces, and the post-WW2, post-25 February 1946, pre-26 December 1991-24 December 1993 combined ground combat, aerial warfare and naval warfare division of the Soviet government, the Soviet Armed Forces, from the newly restored German Empire as the Royal House of Hohenzollern-ruled German Empire’s post-1867, pre-1919 state flag and civil and national ensign, a horizontal tricolour of black, white, and red, goes up across a truly united Germany from Prussia to Alsace–Lorraine since 1919 and the FRG’s and the SUPG-ruled GDR’s shared state and civil ensign and civil flag, a tricolour consisting of three equal horizontal bands displaying the national colours of Republican Germany: black, red, and gold (German: Schwarz-Rot-Gold), were simultaneously lowered across the newly restored German Empire as the Royal House of Hohenzollern-ruled German Empire’s  national borders as the German people, from Bavaria to  Königsberg [modern day-Russian Kalingrad] celebrated the restoration of the only true German government [the Royal House of Hohenzollern-ruled German Empire].

The  Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 heraldic eagle, derived from the Roman eagle standard known as a Reichsadler [Imperial Eagle |Reichsadler|] a single-headed eagle with a Prussian inescutcheon, [the Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 Reichsadler |a single-headed eagle with a Prussian inescutcheon|], [the Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 Reichsadler] known [the Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 Reichsadler] as [the name of the Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 Reichsadler] die Deutsches Reichadler [the German Imperial Eagle |die Deutsches Reichadler|], [the Royal House of Hohenzollern-ruled German Empire's  post-1871, pre-1919 die Deutsches Reichadler] makes a return as the German national emblem after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany.


The Germans then restore the German Empire's post-1871, pre-1919 unified ground and air force, the Imperial German Army from the FRG's post-12 November 1955, pre-3 October 1990 unified armed forces, the Bundeswehr [Federal Defence |Bundeswehr|] and the GDR's post-1 March 1956, pre-2 October 1990 armed forces and the SUPG's  post-1 March 1956, pre-2 October 1990 armed wing, and thus the GDR's combined armed forces,the Nationale Volksarmee [National People's Army |Nationale Volksarmee|].

 The Federal Republic of Germany's post-7 September 1949 federal parliament and the lower of two federal chambers in the FRG's government structure, opposed to the upper chamber, which is the only federal representative body that the German people directly elect, comparable to the House of Commons of the United Kingdom or the United States House of Representatives, whose members are representatives of the German people as a whole, are not bound by any orders or instructions and are only accountable to their electorate and their conscience and is elected every four years by German citizens[f] aged 18 and older,  and also oversees the chancellor and their ministers, to each of which the parliament constituted mirroring committees for oversight (Ausschüsse) and whose elections use a mixed-member proportional representation system which combines first-past-the-post elected seats with a proportional party list to ensure its composition mirrors the national popular vote,  and can only be dissolved by the President of the Federal Republic of Germany, and only after the chancellor failed to maintain the confidence of the parliament in a vote called for either by him or a majority of the house, along with setting the FRG's government budget,  for which to execute it assembles the largest and most important committee of the house, being the FRG's chief legislative body on the federal level, producing the FRG's federal government and its presiding chancellor, with individual states (Bundesländer) of Germany participating in the legislative process through the Bundesrat, a separate assembly sharing several privileges with the house, the Bundesrat, [ the Bundesrat after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] merges with the SUPG-ruled GDR's post-7 October 1949, pre-3 October 1990 supreme power organ, which was the only branch of government in the SUPG-ruled GDR, and per the principle of unified power, all state organs were subservient to it, which was the highest organ of state power in the SUPG-ruled GDR, and both constitutions vested it with great lawmaking powers,  with all other branches of government in the SUPG-ruled GDR, including the judiciary, being responsible to it, appointing the State Council (the GDR's collective head of state), the Council of Ministers (the GDR's government), and the National Defence Council (the GDR's collective military leadership), the Volkskammer [People's Chamber |Volkskammer|], [the FRG's Bundesrat merging with the SUPG-ruled GDR's Volkskammer after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] to [the merger of the FRG's Bundesrat with the SUPG-ruled GDR's Volkskammer] reform  the Royal House of Hohenzollern-ruled German Empire's post-18 January 1871, pre-26 October 1918 lower House of Parliament, representing the national and democratic element alongside the federalism of the Bundesrat and the monarchic and bureaucratic element of the executive, embodied in the Reich chancellor, having  legislative power and shared in decision-making on the Royal House of Hohenzollern-ruled German Empire's budget, along with having certain rights of control over the executive branch and could engage the public through its debates,  whose members were elected for three-year terms from 1871 to 1888 and following that for five years, the Deutscher Reichstag [German Realm Diet |Deutscher Reichstag|], [the FRG's Bundesrat merging with the SUPG-ruled GDR's Volkskammer to reform the Royal House of Hohenzollern-ruled German Empire's Deutscher Reichstag after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany].

The FRG's post-23 May 1949  legislative body, that represents the sixteen Länder (federated states) of Germany at the federal level (German: Bundesebene), which legislates alongside the FRG's Bundestag, which consists of members appointed by state governments in the FRG and is affected by changes in power in the states of Germany, and thus by elections in each state, with each delegation  essentially being representation of the state government and reflects the political makeup of the governing coalition in each state legislature, being continuous body and has no legislative periods, the FRG's Deutscher Bundesrat [German Federal Council |Deutscher Bundesrat|], [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] is [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] expanded [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] to include the former SUPG-ruled GDR territories in Eastern Germany and the reclaimed Prussian territories and [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] used [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] to [the FRG's Deutscher Bundesrat  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany] restore  the Royal House of Hohenzollern-ruled German Empire's post-1871, pre-1918 highest legislative body, whose  members were appointed by the governments of the Royal House of Hohenzollern-ruled German Empire's constituent states to represent their interests in the Royal House of Hohenzollern-ruled German Empire's parliament, and was also responsible for the enactment of the laws, administrative regulations and the judicial resolution of disputes between constituent states in the Royal House of Hohenzollern-ruled German Empire, and whose approval was also required for declarations of war and, with certain limitations, the conclusion of state treaties, along with being chaired by  the Royal House of Hohenzollern-ruled German Empire's chancellor,  who [the Royal House of Hohenzollern-ruled German Empire's chancellor] was [the Royal House of Hohenzollern-ruled German Empire's chancellor] appointed [the Royal House of Hohenzollern-ruled German Empire's chancellor] by the Royal House of Hohenzollern-ruled German Empire's emperor, whose only  functions were to chair the legislative body's meetings and implement its resolutions, having neither a seat nor a vote in the chamber and could not propose legislation, but in practice, the Royal House of Hohenzollern-ruled German Empire's chancellor was almost always the minister president of the Royal House of Hohenzollern-ruled Kingdom of Prussia as well, thus allowing him to act as a member of the Bundesrat and introduce legislation, the Royal House of Hohenzollern-ruled German Empire's Deutscher Bundesrat, [the FRG's Deutscher Bundesrat being used to restore  the Royal House of Hohenzollern-ruled German Empire's Deutscher Bundesrat]  after the restoration of the Royal House of Hohenzollern-ruled German Empire as the government of a united, post-Berlin Wall, post-FRG, post-SUPG-ruled GDR united Germany.


The Imperial German Army's  domestic counterintelligence branch also dealing with foreign intelligence with additional roles in  in media censorship and propaganda, Abteilung III b, [Abteilung III b] is [Abteilung III b] restored through the FRG's federal intelligence agency and domestic intelligence service responsible for military counterintelligence within the Bundeswehr, whose primary tasks include securing German troops, camps and facilities against external threats and also for vetting new members of the armed forces and monitors them for extremism and possible espionage, the Militärischer Abschirmdienst [Military Counterintelligence Service],  the foreign intelligence agency of the Federal Republic of Germany, directly subordinate to the Chancellor's Office, acting as an early warning system to alert the German government to threats to German interests from abroad, depending heavily on wiretapping and electronic surveillance of international communications, collecting and gathering information on a variety of areas such as international non-state terrorism, weapons of mass destruction proliferation and illegal transfer of technology, organized crime, weapons and drug trafficking, money laundering, illegal migration and information warfare  in addition to gathering both military and civil intelligence, the Bundesnachrichtendienst [Federal Intelligence Service |Bundesnachrichtendienst|], the Federal Republic of Germany's federal domestic intelligence agency tasked with intelligence-gathering on efforts against the liberal democratic basic order, the existence and security of the federation or one of its states, and the peaceful coexistence of peoples; with counter-intelligence; and with protective security and counter-sabotage,  investigating efforts and activities directed against the federal level of Germany or transnational, in matters of foreign policy significance and at the request of a state authority for the protection of the constitution,  the  Bundesamt für Verfassungsschutz [the Federal Office for the Protection of the Constitution |Bundesamt für Verfassungsschutz|] along with the GDR's state security, domestic secret police organization and foreign intelligence service, the Ministerium für Staatssicherheit [Ministry for State Security]. 

After the restoration of the German Empire's naval warfare force from the FRG's and GDR's respective navies, the naval intelligence department of the German Imperial Admiralty Staff or Admiralstab between 1901–1919, being able to recruit a worldwide network of agents, drawing on the resources of German shipping companies and the German diplomatic service,  having established a global "war intelligence system"  which was intended to provide a flow of intelligence on foreign naval movements in the event of war or heightened tension, the Nachrichten-Abteilung.