At the back behind the church is a cemetery where, in the 1920s, around 40 legionaries killed at Kostiuchnówka were buried. The transfer of the soldiers' ashes from the battlefield to the church cemetery was initiated by the then mayor Maniewicz. This cemetery and a monument were consecrated on 29.06.1929 in the presence of the President of the Republic of Poland, Ignacy Mościcki.The necropolis was looked after by the War Graves Department. After the Second World War the cemetery was left unattended, only in 2003 scouts from Zgierz renovated it - they restored the main monument and gravestones and cleaned the whole burial area. The inscription plates on the monument were also restored. In August 2004, a team from Poland carried out exhumation work to verify information about Legionary burials beyond the present cemetery (in the back yard of the presbytery on the eastern side of the cemetery and in private gardens on the western side of the cemetery). The information turned out to be true. The excavated remains of the Legionaries were buried again on 11.09.2004, this time within the present Legionary cemetery. The burial was accompanied by a mass and a scout guard of honour. The remains were buried in the second row behind the monument.The cemetery consists of about 40 identical graves framed by concrete kerbs. Each grave bears a white concrete cross on which the soldier's name was originally engraved; the crosses are now unnamed. In the midst of the graves stands a tall monument. The inscription on the monument reads: "To the faithful sons of the Fatherland / Legionaries fallen / in the years 1914 - 1918 / Grateful Poland. 1929". Underneath, a second plaque with the inscription: "The consecration of the cemetery-monument was performed on 29 June 1929 in the presence of the President of the Republic".For more than 20 years the cemetery has been taken care of by scouts from the Lodz Scouting Organisation of the Polish Scouting and Guiding Association (ZHP); for several years this care has been financed from the programme of the Minister of Culture and National Heritage "Sites of National Remembrance Abroad".