Q: You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.
Context : In ''A Life of Matthew Fontaine Maury; compiled by his daughter, Diana Fontaine Maury Corbin (1888)'' she states on pages 7--8, ''Matthew's father was very exact in the religious training of his family, now numbering five sons and four daughters, viz., John Minor, Mary, Walker, Matilda, Betsy, Richard Launcelot, Matthew Fontaine, Catherine, and Charles.
Subject : Matthew Fontaine Maury
Relation : military branch
A:
What military organization did Matthew Fontaine Maury belong to?