I'm not a novelist, and I haven't learned enough web novels to write a World War II novel with more than two million words. However, I can tell you some techniques and precautions for writing a World War II novel. The inspiration for the creation of World War II novels could come from historical events, military tactics, war arts, biographies, and many other sources. In the process of creation, one needed to pay attention to the accuracy of history and the integrity of character creation. The war scenes and plots needed to be true to history, and at the same time, they needed to add personal emotions and human nature descriptions so that readers could understand and feel the cruelty of war and the complexity of human nature more deeply. In the aspect of character creation, it was necessary to pay attention to creating characters with distinct personalities and characteristics so that readers could remember them and resonate with them. At the same time, he had to pay attention to the interactions and relationships between the characters. He had to deal with the differences between their classes, races, beliefs, etc. to make the story more intense and deep. In terms of writing skills, one should pay attention to the ups and downs of the plot, the compact rhythm and the release of tension. At the same time, one should also use various rhetorical devices such as description, metaphor, symbolism, etc. to enhance the artistic appeal and readers of the novel. In short, writing a World War II novel required sufficient historical knowledge and literary attainments. At the same time, it required sufficient creativity and imagination, as well as excellent writing skills and plot conception. I hope my answer will be helpful to you.