Illustrated Companion to the Latin Dictionary/Caligatus

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

CALIGA'TUS. Wearing the caliga, or soldier's shoe (Juv. Sat. iii. 322.), as seen in the last cut but one; and thence by implication, a common soldier (Suet. Aug. 25. Id. Vitell. 7.), because its use was peculiar to the rank and file.