Gvardeyskoye (Russian: Гварде́йское, Lithuanian: Miulhauzenas, German: Mühlhausen (Kreis Preußisch Eylau), Polish: Młynary) is a rural locality (a settlement) in Bagrationovsky District of Kaliningrad Oblast, Russia, located approximately 10 kilometers (6.2 mi) north of Bagrationovsk, the administrative center of the district, and 25 kilometers (16 mi) south of Kaliningrad, the administrative center of the oblast.

In 1454, the region was incorporated by King Casimir IV Jagiellon to the Kingdom of Poland upon the request of the anti-Teutonic Prussian Confederation.

[4] After the subsequent Thirteen Years' War, since 1466, it formed part of Poland as a fief held by the Teutonic Order,[5] and then held by Ducal Prussia after the secularization of the Order in 1525.

In 1643, Mühlhausen came into the property of the von Kalckstein family until 1826, also as advowson of the Church.

[clarification needed] Conquered by the Red Army during World War II, Mühlhausen was transferred from Germany to the Soviet Union according to the 1945 Potsdam Conference and had its German population expelled, also in accordance to the Potsdam Conference.