Minesweeper Day commemorates the anniversary of the events of the 16th Infantry Regiment April 1945, when soldiers of the First and Second Polish Army crossed the Oder and Neisse lines Lusatian. It also commemorates the great effort of soldiers – Sappers during demining the country. At that time, the Sappers made a huge contribution to regaining Polish lands. 1971 sappers gave their lives.

The Sapper Memorial In Ełk is located at Kościuszki Street at the monument "Glory to the Sappers killed during demining Masurian Land". In the Ełk barracks complex in the years 1967 – 2000 functioned meritorious for the armed forces of the Republic of Poland Centre Training of Specialists of the Engineering Forces.

In Ełk, today (14 April) a ceremony took place organized by the Association of Polish Sappers Circle No. 30 to commemorate the memory meritorious sappers. The celebrations were attended by m.in Colonel Dypl in St. Spocz. Zdzisław Stola - President of the Association, President of Ełk Tomasz Andrukiewicz, and invited guests who laid flowers and lit candles at Monument.