Countersign signals
Subtitle: instructions.
Contributors: Marian S. Carson Collection (Library of Congress)
Publisher: s.n.
Published: 1861
Place of publication: [Washington
Language: eng
Subjects: Signals and signaling -- United States.; United States -- History -- Civil War, 1861-1865 -- Communications.
Other titles: Instructions, countersign signals.
Notes: Caption title.
"General orders, no. 29.  Headquarters, Army of the Potomac, Washington, October 17, 1861."