坚定不移捍卫用鲜血和生命写下的历史

Group 1 - The article emphasizes the significance of December 13 as the National Memorial Day for the victims of the Nanjing Massacre, marking the twelfth anniversary of this observance [1] - It highlights the historical context of the Nanjing Massacre, describing it as one of the three major atrocities of World War II and a severe crime against humanity [1] - The article warns against the actions of certain Japanese politicians who deny the Nanjing Massacre and seek to expand military capabilities, which poses a threat to regional peace and stability [1] Group 2 - The article asserts that history and facts cannot be altered, emphasizing the sacrifices made by the Chinese people during the Anti-Japanese War and the World Anti-Fascist War [2] - It calls for heightened military readiness and the necessity for revolutionary soldiers to be prepared to defend national sovereignty and interests [2]