Already in the year 1825 the Duke of Brunswick suggested to establish a railway line from Braunschweig-City and Hanover-City via Celle and Uelzen to Hamburg to the Hanoverian government. Contrary to Brunswick, that already thirteen years later celebrated the first train betwenn Wolfenbüttel and Brunswick-City, the project failed in royal Hanover. Not only was the majority of the Parliament against a railway line, also the merchants protested against it. In Celle the merchants wrote a protest note to king and government:

" By the implementation of the project not alone local places, but also the whole kingdom are brought to an irreplaceable disadvantage, and completely cut off and destroyed to that most important branch of trade of the subjects. The income of the kingdom would decrease, the shipping on the Rivers Weser, Leine, and Aller would be completely lost and suppressed for the kingdom; Hamburg and Brunswick would actually tear the trade. "

Whereupon the government decided 1826 against the building of railways due to the heavy impairment of the merchants. The topic railway was a " international " Politicum anyway. Favored Hanover nevertheless an end-of the-line at hear seaport Harburg (south of Hamburg), the Free-city Hamburg, Prussia, and the Dutchy of Brunswick anted to build the line across the River Elbe up to Hamburg. Finally the crossing over the River Elbe was finished with the "Hamburg Elbbridges" in 1872; the first thru-train from Hanover-City to Hamburg in 1875. The railway had a military aspect, too. Thus the military required different track sizes in different German states. If that had been realized, a travel from Magdeburg to Dortmund via Brunswick-City and Hanover-City for example would have ment for someone to change trains (& tracks) four times.

Although the building of a railway in Brunswick was pursued and also in Prussia in the following years, the railway opponents in Hanover found an allied in their King Ernst August, an old Hussar officer.

This should change to at the beginning of the 1840s. King Ernst August had not only a test run on the Braunschweig State Railways, but also had opposite modified fundamentally its attitude to the railway. The government now planned the errection of a distance of Hildesheim via Peine, Celle, and Uelzen to the Hanoverian seaport Harburg. The capital Hanover-City should not be attached at all to the traction network, since the king did not want to have smoke and steam of the locomotives in his city. On urge of Prussia and Braunschweig, which planned a railway from Berlin via Brunswick-City and Minden to Cologne, the Hanoverian government had to devide over an East-West connection via Hanover-City. With the pressure of the neighboring states the line Hanover - Peine was opened in 1843, which reached in 1844 the national boundary to the East with the Brunswick State Railway. Although the line Berlin-Hanovercity-Cologne wasn't opened before 1847, a part of the northern line from Hildesheim & Peine to Celle was established in 1845. From now on up to the illegitimate Annexion of the Kingdom of Hanover in 1866 the rail network continued to increase immenseley: The northern line was completed from Celle via Uelzen to Harburg in 1847; the southern line from Hanover-City and Hildesheim via Göttingen to Kassel in 1853; the western line from Hanover-City to Emden via Osnabrück, Rheine and Meppen to Emden the in 1855; a pass course from Lüneburg to Lauenburg in 1864; and finally the line from Hanover-City to Wesermünde via Nienburg and Bremen in 1862. As competition to the Prussian railway line Berlin-Hamburg, a line from Magdeburg to Uelzen via Stendal was planned, which however wasn't opened before 1873. A small anecdote: the trains from Hanover-City to Hamburg stopped at Uelzen's Hanoverian Station. The trains from Stendal and Halberstadt to Bremen at Uelzen's Halberstädter Station. Because in addition, a common Central European time wasn't introduced before 1893, Uelzen had not only two different railways stations, but also two different timetables with different times.

	Egestorffs first locomotive " Ernst August "

Not only the Brunswick State Railways, but also the Royal Hanoverian Railways referred their first locomotives from England. Over the sea route to Harburg shipped, they had to be carried for more than 200 km on horse carts up to railway tracks. For the opening of the line Hildesheim-Celle Egestorff Machine Factory (later called "Hanomag") presented its first locomotive, which got named " Ernst August ". For the terrain difficult of the southern line to Kassel Egestorff produced a special locomotive, that's two drive axles were coupled. Also in striving for higher rates Egestorff for Germany supplied innovative locomotives, which already drove maximum speeds up to 120 km/h in the 1850s.

	Expresstrain locomotive Class„C3T“