The Swiss intervention by Poland stemmed from the seizure of the Swiss government by the Liberal Party of Switzerland. The power struggle within Switzerland had largely been disregarded by the PSNR (Polish Social Nationalist Republic) until February 1st, when the Liberal Party assumed control of the Swiss government. Subsequently, on February 2nd, the Polish government officially labeled the Swiss government as a terrorist state and initiated a bombing campaign targeting strategic infrastructure throughout Switzerland. The Polish Minister of War, Witold Basiński, asserted, "There shall be no state liberal governments, at least in Europe. We, the protectors of Europe, shall not allow it. While elected liberal governments like the European Commonwealth and The Eastern Roman Empire may exist and operate relatively freely, we will not permit governments of any country on this continent to oppress their own nation at gunpoint."
On February 3rd, the Uruguayan Confederal Board of Directors condoned the military actions taken by Poland in Switzerland and sanctioned the creation of a volunteer expedition to support them. Subsequently, on February 5th, a ZZ paratrooper division attempted to land in Zurich, facing initial failure. Despite this, the Swiss side suffered more casualties than the ZZ division, which managed to retreat before being entirely eliminated. Simultaneously, on February 5th, The Lebanese Republic declared its commitment to assisting Switzerland in repelling any invasion from what it referred to as 'this new Axis of Evil.'
On the 6th of February in the vicinity of Chur, Switzerland, a collaborative effort between Polish ZZ paratroopers, local nationalist paramilitary groups, and Stalinist paramilitary factions resulted in the seizure of the city's administrative building by resistance forces.
On the 7th of February Trimmis and Zizers were occupied by 'the resistance forces' and a fierece battle began in Landquart. The city of Thun was also captured later that day.
On the 8th of February, Landquart fell to the ZZ, Schiers and Sargans were reached and battles began there. The Swiss Truhist movement also began military operations against the Swiss regime taking over Martigny, Saxon, Riddes and Nendas in the Valais region.