What is the topic of 'Empire of the Sun'?

"Empire of the Sun," a novel by J.G. Ballard, explores the experiences of a young British boy, Jim "Jamie" Graham, during World War II in Shanghai. The story delves into themes of survival, loss, and the impact of war on innocence, as Jim navigates life in a Japanese internment camp after being separated from his parents. Through his eyes, the narrative examines the complexities of human nature and the harsh realities of conflict, blending elements of memoir and fiction.