miles gloriosus

noun

mi·​les glo·​ri·​o·​sus ˈmē-ˌlās-ˌglȯr-ē-ˈō-səs 

plural milites gloriosi ˈmē-lə-ˌtās-ˌglȯr-ē-ˈō-(ˌ)sē 

: a boastful soldier

especially : a stock character of this type in comedy

Word History

Etymology

Latin

First Known Use

circa 1576, in the meaning defined above