The Polish government is working on a plan to prepare large-scale military training for every adult male in response to the changing security situation in Europe.
Prime Minister Donald Tusk said there is a need for an army of 500,000 soldiers, which would include reservists.
In a major speech on security to the country’s Sejm, the lower house of parliament, he said: “We will try to have a model ready by the end of this year, so that every adult male in Poland is trained in the event of war.
“So that this reserve is really comparable and adequate to potential threats.”
Last year, the Polish government said the military encompassed about 200,000 soldiers and was to grow to 220,000 this year with the objective of increasing it to about 300,000.
The war, the geopolitical uncertainty and the new arms race started by Putin have left Europe with no choice. Europe must be ready for this race, and Russia will lose it like the Soviet Union 40 years ago. From today, Europe will arm itself more wisely and faster than Russia.
— Donald Tusk (@donaldtusk) March 6, 2025
But security fears have grown far more dramatic in recent weeks, as Russia continues to pound Ukraine with missiles and drones, and as the Trump administration in the US has withdrawn military and intelligence support for Ukraine while putting its commitments to Nato in question.
“Today we are talking about the need for a half-million army in Poland,” Mr Tusk said.
After his speech, he told reporters that he was not considering a return of universal military service, but rather a reserve system based on the model in Switzerland.
There, every man is obliged to serve in the military or an alternative civilian service and women can volunteer if they choose.
Poland, with a population of 38 million people, is located along Nato’s eastern flank and is deeply concerned by the war in Ukraine.
There are fears that if Ukraine is defeated, Russia will turn its imperial ambitions next to countries like Poland, which Moscow controlled during the 19th century and during the Cold War.
Jaroslaw Kaczynski, the head of Poland’s largest opposition party, the conservative Law and Justice, said a mental shift in society would also be needed in addition to the military training of men.
“We will have a return to the chivalric ethos and to the fact that men should also be soldiers, that is, be able to expose themselves, even to death,” Mr Kaczynski said.
Concern has grown in Poland and across most of Europe as US President Donald Trump has signalled a dramatically shifting US position to one that includes support for Russia’s position – even though on Friday he issued a stern warning to Russia after it attacked Ukrainian energy facilities with dozens of missiles and drones.
“If Ukraine loses the war or if it accepts the terms of peace, armistice, or capitulation in such a way that weakens its sovereignty and makes it easier for (Russian President Vladimir) Putin to gain control over Ukraine, then, without a doubt, and we can all agree on that, Poland will find itself in a much more difficult geopolitical situation,” Mr Tusk said.
Also on Friday, President Andrzej Duda said he was submitting an amendment to the Polish constitution for consideration which would oblige the country to spend at least 4% of its gross domestic product each year on defence.
Poland is already Nato’s top spender on defence as a percentage of its overall economy, spending above 4% of its GDP this year.
But Mr Duda said he wanted to take advantage of the consensus on the current political scene in Poland to enshrine it in the highest law.
Mr Trump has suggested that the US might abandon its commitments to the alliance if member countries do not meet defence spending targets.