Sentence:  "Marched from the left, and to deployer to the left."—In which caſe the right squadron moves ſtreight forward to the <WSD>point d'appui</WSD> marked by the Quarter Maſter, &c. &c. 
Meaning of the word marked with <WSD> tags:  A given point or body upon which troops are formed, or by which they are marched in line or column.