The term "quartermaster" is not commonly used in the context of law firms, and its meaning may vary depending on the country and service. However, based on the limited information available, it seems that in the context of a law firm, a quartermaster may be responsible for office supplies and necessities, such as pens and uniforms, and for determining what is and isnt allowed based on the available budget. It is important to note that this information is not definitive and may not apply to all law firms.