William E. Sellers is an author about whom little is known; his nationality and dates of birth and death cannot be confirmed, and the available public information is limited, making it difficult to reconstruct a full account of his life. Two of his works are currently held in the collection: From Aldershot to Pretoria and With Our Fighting Men. Judging from the titles and subject matter of these two books, Sellers focused on military topics, dealing with troop movements, battlefield observations and the lives of soldiers, and his writing carries a clear documentary and reportorial character. Works of this kind are usually based on first-hand experience or observations made while accompanying troops; their language is plain and they emphasize a sense of immediacy, offering readers a first-hand narrative of military operations and army life in the relevant period. Although records of the author's own background, career and full body of work remain insufficient, the two surviving works alone show that he cared about the circumstances of ordinary soldiers and was skilled at presenting the details of marches and combat in narrative form. For readers studying documentary writing on military subjects, Sellers's works still retain a certain reference value and historical significance.