The things they carried refers to both the physical and emotional burdens carried by soldiers during the Vietnam War, as vividly depicted in Tim O'Brien's collection of linked short stories. This term encapsulates the heavy loads of equipment, weapons, and personal items that soldiers had to transport, while also symbolizing their psychological struggles, fears, and memories. It serves as a lens through which the complexity of war experiences is examined, revealing the intricate relationship between physical and emotional weight.