Ancillary attachments are those issued in the course of litigation and in aid of the enforcement of judgments. [Maxwell v. Hixson, 383 F. Supp. 320 (E.D. Tenn. 1974)]
An ancillary attachment is the ordinary remedy by attachment invoked in aid of the collection of plaintiff's demand in an action. However, in some jurisdictions the execution of a writ of attachment is in effect the commencement of an action, in which case, the attachment is a principal action rather than an ancillary action or proceeding.