The organisation includes some of the country’s biggest retailers and food producers.
Prime Minister Mateusz Morawiecki announced on Facebook on Tuesday that the government will finance the purchase of masts and flags for all municipalities that sign-up to the "Under the White and Red" campaign.
Historians plan to publicise a key battle in European history, which is still little known outside Poland.
One of the largest in the history of social media the campaign will reach hundreds of millions of consumers.
As part of the #NoDenyingIt campaign by prominent Holocaust survivors, Auschwitz survivor Marian Turski wrote an open letter in Germany’s Frankfurter Allgemeine Zeitung urging Facebook boss Mark Zuckerberg to remove Holocaust-denying groups, pages and posts as hate speech.
Incumbent President Andrzej Duda in the last hours of the presidential campaign expressed trust that, together, Poles are able to build a just, prosperous and strong country.
Friday is the last day of the presidential campaign before the Sunday run-off election.
The campaign route of President Andrzej Duda seeking re-election has been planned out, he will be active until its very end but there is no time for any debate with his rival in the runoff vote, Duda's election staff member Radoslaw Fogiel said on Wednesday.
Organiser Adam Koniuszewski told TFN: “The campaign is a response to the multiplication of online scams. The participants in our ‘CyberSecurity Challenge PL 2020 project’ are agents of change and address these demographics with a bottom-up approach.”
Polish President Andrzej Duda told reporters late on Monday that due to the spread of the coronavirus in Poland he will not hold large campaign meetings ahead of the presidential election planned for May.