Following the pathbreaking work of Andrew Ayton, scholars have developed sophisticated methods for analyzing the relationships among members of the knightly class and gentry to demonstrate the existence of “military communities” that joined together to form the English armies of the Hundred Years’ War. More recently, scholars have used these same techniques to identify similar military communities among the knights and gentry during the reigns of Edward I and Edward II. The main sources for establishing these ties of family, tenancy, friendship, and previous military service have been the so-called “horse lists”, which were essentially insurance records for the mounts of men in the army, and letters of protection, guaranteeing freedom from prosecution and debt collection while the combatant was in royal service. Knights and members of the gentry appear quite frequently in these types of documents. However, 90% or more of the men in the English armies during the reign of Edward I, belonging to the economic and social strata below the gentry, rarely appear in either letters of protection or horse lists. As a result, these men have not received any attention from the perspective of analyzing English military communities in the thirteenth and early fourteenth centuries. Through a systematic analysis of broad classes of largely unpublished documents from Edward I's military campaigns in Scotland between 1296–1307, particularly payroll and victualling documents as well as garrison rolls, this essay begins to address the scholarly lacunae with respect to sub-gentry soldiers and finds that they also formed military communities in the same ways as their social and economic superiors.