War of Seventeen Years

The War of Seventeen Years (1450–1467) was fought between Dixie and Saxony, with the participation of a changing list of allies through the war. The first phase, beginning in May 1450 and ending with the 1458 Peace of Belle, is considered a related conflict of the First Saxonian Invasion. The second phase started in August of 1458 and continued until 1467 when Dixie and Saxony agreed to peace terms in the Treaty of Viva.

Major areas of conflict included Northern Saxony, Southern Dixie, Fleur, and the Dixan Sea. In addition, Dixie supported revolts against Saxonian rule in East Schwerin (1450–1460), while from 1458 to 1466 Saxony backed Dixan rebels in the civil war known as Edward I's War. Both also backed opposing sides in the 1438 to 1449 Zuidwestan Civil War.

Dixan territorial gains were minor but strengthened the empire's borders; additionally, William II married Victoria III of Zuidwesten, eldest daughter of Conway III. Saxony retained a vast continental empire and remained a leading power in Fleur, but the treaty marked the beginning of a gradual loss of its Fleurian predominance, in favor of a rising Dixie under William I.