comitatus
noun
com·i·ta·tus
ˌkäməˈtätəs,
-tād-
plural -es
1
: a body of wellborn men attached to a king or chieftain by the duty of military service
also : the status of the body so attached
2
[Medieval Latin, from Latin] : county —used chiefly in the phrase posse comitatus
Word History
Etymology
Latin, escort, retinue, imperial court, from comit-, comes companion + -atus -ate