Each regimental National Ensign and Regimental Standard has upon the staff beneath the flag a silver plate for each battle in which the regiment has been engaged, the name and date of the battle being engraved thereon. Flags are provided for the use of general officers of the United States Army to be flown from a staff in the bow of a boat when making official trips by water, or from a staff at the front of an automobile; these flags being of red bunting bearing four white stars for a general, three white stars for a lieutenant general, two white stars for a major general and one white star for a brigadier general. The flag for the Chief of Staff of the United States Army is of scarlet and white silk, divided diagonally from the lower left hand corner to the upper right hand corner, bearing in the center a large five-pointed star embroidered in white silk surcharged with the coat of arms of the United States embroidered in proper colors. In the upper left hand corner on the scarlet silk is a large five-pointed star embroidered in white and in the lower right hand corner a large five-pointed star embroidered in red. For a coast defense district commander a red flag bearing two cannon, crossed, in yellow, is authorized, and for a post commander a pennant, the third next the staff being blue bunting with thirteen white stars and the remainder being of red bunting. [Illustration: GERMANY ENSIGN JACK NATIONAL FLAG AND MERCHANT] [Illustration: ADMIRAL VICE ADMIRAL REAR ADMIRAL] [Illustration: PENNANT] [Illustration: AUSTRIA-HUNGARY ENSIGN JACK MERCHANT] [Illustration: ADMIRAL VICE ADMIRAL REAR ADMIRAL] [Illustration: PENNANT ENSIGNS, FLAGS AND PENNANTS.] For the general officers and post commanders of the United States Marine Corps flags and pennants of similar design, but with the addition of the Marine Corps insignia in white added, are provided. _A Guidon_ is a small flag or pennant carried by each troop of cavalry, company of mounted engineers, battery of field artillery, mounted company of the signal corps, field hospital, ambulance company and motor truck company, to designate the unit which carries it. The cavalry guidon is made up of two horizontal stripes, the upper one red and the lower one white, the outer end being notched or cut “swallow-tailed,” with the number of the regiment in white on the upper stripe and the letter of the troop in red on the lower stripe. The field artillery guidon is of the same shape and colors as the cavalry guidon with the addition of two cannons crossed in the center, the cannons and the regimental number and battery letter being in yellow. The guidon for a company of mounted engineers is of the same shape as the cavalry guidon, of scarlet with the corps insignia of the engineers in the center, the word “MOUNTED” above it and the number of the company below it, the insignia, letters and numbers being in silver embroidery.