Books like those by James Holland focus on specific units, such as the Sherwood Rangers tank regiment, illustrating how a military unit evolves into a "community—even a family".
The Bonds of War: An Exploration of the "Brothers-in-Arms" Theme brothers-in-arms-collection
Many collections under this title, such as the Unique Collection of Letters and Photographs from WWI, provide a raw look at this phenomenon. These collections often juxtapose the "mud and misery" of the trenches with the "compassion and care" soldiers showed for one another. Books like those by James Holland focus on