author
b. 1784
An early 19th-century soldier-writer, he left behind a vivid first-person account of military life and travel in India. His memoir stands out for its plainspoken detail and the sense of lived experience behind every page.

by Robert Butler
Robert Butler, born in 1784, is known as the author of Narrative of the Life and Travels of Serjeant B——, a firsthand memoir that follows his life in the army and his travels in India. The book has been preserved by Project Gutenberg and cataloged by library sources as a travel narrative connected with India.
What makes Butler interesting is the directness of his writing: rather than offering a polished literary persona, he appears as a witness to the routines, hardships, and movement of military life in the early 1800s. That gives his work value not only as autobiography, but also as a historical glimpse of the period.
Reliable biographical detail about Butler himself is limited in the sources I could confirm here, so it is safest to focus on the book he is associated with and the world it records.