This is a Kriegsmarine Minesweeper Badge used by the German Navy during World War II. It is a standard military decoration awarded to personnel involved in minesweeping operations. The badge features a central design of a naval mine explosion with an oak leaf wreath surrounding it, topped by the German eagle and swastika emblem. It was issued to members of the Kriegsmarine who served on minesweepers, escort vessels, and other mine warfare units. The badge was awarded to recognize the hazardous and vital role of clearing naval mines to protect German naval and merchant vessels.