The early decades of Deutsche Bank were a period of rapid expansion. An eye for good trading prospects was combined with a healthy feeling for risk. Business issuance began to grow in importance in the 1880s, and in the 1890s it really took off. The bank played an important role in the development of Germany's electrical engineering industry, but also gained a strong position in iron and steel. A solid base in Germany allowed the financing of overseas business, which in some cases kept the bank occupied for years, the best known example is the Baghdad Railway. The second half of the 1890s saw the beginning of a new period of expansion at Deutsche Bank. The bank formed alliances with large regional banks.An entry in the main industrial regions of Germany. The joint ventures were symptomatic of the ongoing concentration in the German banking sector. For Deutsche Bank, domestic branches were still somewhat rare at the time.
The Frankfurt branch dates from 1886 and the Munich branch of 1892, while other subsidiaries were established in Dresden and Leipzig in 1901. In addition, the bank quickly perceived the value of specialized institutions for the promotion of foreign business. The subtle pressure of the Ministry of Foreign Affairs played a role in the establishment of the Deutsche Ueberseeische Bank in 1886 and participation in the newly established Deutsch-Asiatische Bank three years later, but the success of these companies in difficult times proved that their existence made a Commercial sound When in the spring of 1914 the "Frankfurter Zeitung" told its readers that Deutsche Bank was "the largest bank in the world", the claim marked the climax, but at the same time the end of an era. During World War I, the source of the visionary vigor that had impelled a certain company to succeed was gradually drying up.