Disinformation based on controversial, problematic elements of history is particularly difficult to assess. In Poland, the topic that was used to spread problematic information about the country throughout the recent years was the Remembrance Day of the Cursed Soldiers (March 1st, 2021). — Debunk EU experts analysed problematic information flow between February 26th and April 6th. As a result, 71 disinformation articles in Russian language were found, which broadly used the topic of Cursed Soldiers. [KU1] This subject was not covered regularly through the period of analysis. The ‘problematic information’ flow had a…