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.
On the 10th of February, Vadus and schiers fell to the resistance forces, Bern was captured fully for a short while before the swiss armed forces managed to counterattack and retake most of the city.
On the 11th of February, Davos fell to the resistance forces and most of the of the Graubünden military district of the Swiss republic had collapsed, what remained of the swiss republic forces in Graubünden retreated and concentrated to around St Moritz. Sennwald and Walenstadt also fell to the ZZ offensive. Sion fell to the Swiss Truthist movement the same day.
On the 12th of February, Bern fell to the Uruguayan volunteers. oberriet, altstatten, widnau and thal fell to the resistance forces. battles begin in St Gallen. Sierre and Raron fall to the truthist movement. Indonesia also began shelling southern switzerland from the Mediterranean sea allowing for the truthist movements to make some offensives in the south of the country.
On the 13th of February, appenzell, nesslau and the rest of liechtenstein were captured by the resistance forces. Andermatt and it surrounding area had fallen to the resistance later that day and the swiss state started moving northward up the 2 highway, Arbon had also been captured and the resistance began moving further down the coast. Lugano was also captured by the resistance.
On the 14th of February St gallen had fallen to the resistance forces, the truthist movement expanded its zone of control and the resistance began operations in the st montz military zone.
On the 15th of February, Lucarno was captured by the resistance movement, and they were on the move towards Zurich. A clash had occurred between the Truthists and the resistance in Realp as well.
On the 16th of February The New Roman Empire invaded Switzerland with 34,000 troops, After the Roman intervention, the resistance movement received 2 Extra ZZ divisions and a 25% increase in Polish air presence. Poland also invested heavily in building defensive structures in the core territory of Graubünden. The new Polish presence, along with resistance forces, began an aggressive campaign against the Liberal government, reaching the gates of Zurich and connecting the Bern command with the Chur command.
On the 17th of February the situation and frontline in Switzerland were a little more stable, with the resistance occupying more highways connecting their breaching points. The battle of Zurich was still ongoing with no end in sight. The city of Basel and its surroundings had also been captured by the French who crossed the Swiss border in support of the Swiss state.
On the 18th of February, The Truthist movement pledged its loyalty to Rome officially. The northern outskirts of Zurich were also reached by the resistance.
On the 19th of February, Zurich had been surrounded by resistance forces, and the French and Romans were still on the offensive.
On the 20th of February, Zurich fell, leaving what remained of the Swiss Republic essentially comprised of partisans and several militant groups. The civil administration of the Swiss Republic ceased to exist.
On the 21st of February, Most of the liberal partisan groups had been forced into surrender by the resistance, leaving only the main one under the top general of the Swiss Republic Armed forces.
On the 24th of February, The Swiss Republic had fully fallen. France relinquished control of the territories they occupied, handing them over to the SSNR, and withdrew from the war.