1939 September 1, France invaded Poland. On September 3rd, Britain and France declared war on Germany. On that day, Solez was drafted into the army. On September 26th, the Daladier government issued a decree to dissolve the French Communist Party on the grounds that Germany and the Soviet Union signed a non-aggression treaty on August 23rd and the French Communist Party followed the Soviet Union. It revoked all the membership of communist party, France, and seized the newspaper Humanity and all its publications in communist party, France. The French communist party then went underground. In order to lead the party's work, Solez left the barracks. In order to continue the struggle, the parliamentary group of the French Communist Party was reorganized into the parliamentary group of workers and peasants, which was suppressed again. 1940 in March, the military court tried 44 members of the workers' and peasants' parliamentary group and sentenced them to five years' imprisonment for violating the government dissolution law, spreading the slogan of the "third international" and organizing the workers' and peasants' parliamentary group. At this time, 26 of the 44 people have been arrested and put into concentration camps, and 9 members of parliament are at large, including the sentenced Sores and duclos. Sorez was also given a heavy sentence for escaping from the barracks during the war. The court announced that party member the Communist Party of China (CPC) would be sentenced to death for violating the dissolution law and continuing to engage in party activities. The Ministry of Interior announced the closure of 300 ruling city councils and the disqualification of 27 18 members of the French Communist Party of party member at all levels. By March 7th, 3,400 French communist party cadres had been arrested, most of whom were put into concentration camps.

1On June 22nd, 940, France was defeated. 10 In July, Sores and duclos signed and published an appeal to the French people, pointing out that France had been occupied. A great nation like France will never be a slave, France will never be a colony and will never give in. The great hope of national liberation and social liberation lies in the people. Call on the French people to unite against the German occupiers and French traitors. Due to the surprise attack of Vichy government and German occupiers, Solez moved to Moscow on 1940 according to the decision of the Party.

During his stay in Moscow, Sollez served as a member of the presidium of the Communist International, and kept in touch with China through various channels to inspire and guide the domestic struggle. 1943 In May, he attended the meeting of the presidium of the Comintern in Moscow and participated in the discussion on the dissolution of the Comintern.

From 194 1, Solez made many speeches to the domestic people through Moscow Radio. 1944 delivered a speech in April, summarizing the struggles of the French resistance movement in three periods, especially talking about the struggles of the French militia guerrillas led by communist party. He pointed out that the French communist guerrillas developed from cities to rural areas and mountainous areas and became a powerful domestic resistance force. French communist party united the whole people in the war of resistance, initiated and established the National Front including patriotic parties and forces, and later established the National Resistance Committee.

De Gaulle had to pay attention to the role and influence of the armed forces of the French Communist Party, and sent representatives to meet with the French Communist Party in June 1942+065438+ 10 to reach an agreement to jointly prepare for the national uprising. 1943 65438+ 10, the underground party of communist party, France, arrived in London as the representative of the French Republican militia guerrillas in the French National Committee led by Charles de Gaulle. 1September 1943, 15000 With the support of the people of Corsica, the French militia and guerrillas defeated the German occupation forces like lightning and liberated Corsica. During the same period, six political parties, including Charles de Gaulle, the French Communist Party and the Socialist Party, set up the National Liberation Committee and the Regional Liberation Committee. Sorez pointed out that for the people of the whole country, there is only one slogan and goal: "unity, armed, fighting" and "all for the uprising of the whole people".

1in July, 944, Solez appealed to China on Moscow Radio: "Citizens, take up arms and go to a decisive battle". In August, Sorez voiced again and cheered: From August of 19, the Paris Uprising started under the command of the Paris Liberation Committee led by French Communist party member. After five days of fierce fighting, "Paris is liberated! The whole of France is following the example of Paris! "

10 10 On October 28th, Charles de Gaulle presided over the interim government, held a cabinet meeting, issued a decree signed by Charles de Gaulle, and dissolved the patriotic armed forces of French irregular forces. 165438+1October 6th, the interim government issued an order to pardon Sores. 165438+1On October 30th, Sorez returned to Paris. From Sorez 1944 to 1946, he was elected as a member of the Advisory Committee and the Constitutional Committee, and from 1946 to 1 year.

1June, 945, Sorez made a report at the 10th Congress in communist party, and put forward the program of "rejuvenation, democracy and reunification". All the party's activities are focused on reviving France from the destruction of war. Sorez changed the slogan of "unity, armed and fighting" put forward during the resistance movement to the slogan of "unity, fighting and working", calling on all factories to turn around, cultivate all land, develop industry, agriculture, art and science, realize nationalization and innovate democracy, and mobilize the masses to support the government's program.