The Swabian War of 1499 (Schwabenkrieg, also called Schweizerkrieg ("Swiss War") in Germany and Engadiner Krieg ["War of the Engadin"] in Austria) was the last major armed conflict between the Old Swiss Confederacy and the House of Habsburg. What had begun as a local conflict over the control of the Val Müstair and the Umbrail Pass in the Grisons soon got out of hand when both parties called upon their allies for help; the Habsburgs demanding the support of the Swabian League, and the Federation of the Three Leagues of the Grisons turning to the Swiss Eidgenossenschaft. Hostilities quickly spread from the Grisons through the Rhine valley to Lake Constance and even to the Sundgau in southern Alsace, the westernmost part of Habsburg Further Austria.