Augustus chose "Imperator" ("victorious commander") to be his first name, since he wanted to make an emphatically clear connection between himself and the notion of victory, and consequently became known as "Imperator Caesar Divi Filius Augustus". By the year 13, Augustus boasted 21 occasions where his troops proclaimed "imperator" as his title after a successful battle. Almost the entire fourth chapter in his publicly released memoirs of achievements known as the "Res Gestae" was devoted to his military victories and honors.