In its later incarnation as a "tagma", the regiment (often called collectively , "to exkoubiton" or , "ta exkoubita") was structured along standardized lines followed by the other "tagmata", with a few variations. The regimental commander, the Domestic of the Excubitors (often also shortened to "the Excubitor", ), is well attested in the various lists of offices in the 9th–10th centuries, where it is held in tandem with that of the chief ("dēmokratēs") of the "suburban" (περατικοὶ, ) members of the racing faction ("dēmos") of the Greens, which functioned as a militia for the defence of Constantinople, and of the regiment of the "Walls". The Domestics were originally of strikingly low court rank (mere "spatharioi"), but they gradually rose to importance: while in the "Taktikon Uspensky" of the Domestic of the Excubitors came behind all the thematic commanders ("stratēgoi") in order of precedence, in the "Klētorologion" of 899, the Domestic is shown as superior to the "stratēgoi" of the European themes and even to the Eparch of Constantinople. At the same time, the court dignities they held rose to those of "prōtospatharios" and even "patrikios".