West Prussia was almost completely awarded to Poland after the First World War, only a small strip of land of the western part of the province remained with Germany and became the border province Posen-West Prussia (German: Grenzmark Posen-West).

A small portion of East Prussia, the region around Soldau in the south west of the province, was also awarded to Poland.

In other parts of East Prussia, a plebiscite was held, resulting in a vote for remaining with Germany.

Clubs from both Danzig and Memel continued to compete in the Baltic championship despite no longer being part of Germany.

In 1930, the western parts of Pomerania joined the Verband Brandenburgischer Ballspielvereine to compete in the Brandenburg football championship instead.

The Baltic football championship was first contested in 1908 and won by the VfB Königsberg, a club who would play an important part in the future of the competition.

[11] In this era, the clubs from the Baltic region of Germany found themselves severely outclassed in the national championship.

Eastern Prussia had actually become front line in the early stages of war and a large portion of the province was under Russian occupation, until the battles of Tannenberg and the Masurian Lakes turned fortune in Germany's favour.

[14] The champions, Titania Stettin, achieved the greatest success of any Baltic club so far in the national title games, when it reached the semi-finals, to bow out 3–0 to 1.

[17] The 1926 and 1927 editions saw the competition enlarged to six clubs, with the winners and runners-up of the three regions, Pomerania, East Prussia and Danzig, all qualified.

[21] In the era that followed, the clubs from the Baltic continued to see very limited success in the national finals, never advancing past the group stages.

[22] After the end of the Second World War, Germany suffered further territorial loss, and half of East Prussia, the Free City of Danzig and most of Pomerania becoming part of Poland.

Only a small strip of Pomerania west of the Oder-Neisse line remained part of Germany.

German clubs in the region were either dissolved, as in most cases, or become part of the Polish football league system.