In the new military-administrative theme system, every major division, called a "thema" (Greek: θέμα), was further divided into "tourmai". Each "tourma" was divided into "moirai" (Greek: μοίραι) or "droungoi". Which in turn were composed of several "banda". Thus each "moira" or "droungos" was the analogue of a modern regiment or brigade, initially circa 1000 men strong (and hence also referred to as a "chiliarchia"), although on occasion it could rise to 3000 men. Emperor Leo VI the Wise (r. 886–912) is recorded as having established "droungoi" of only 400 men for the new smaller themes.