First Call : A routine call sounded as a warning signal for roll call formations and many other ceremonies; also sounded 5 minutes before morning and evening colors
Compass (The National Training Portal of The U. S. Naval Sea Cadet Corps), appendix I, Glossary, VA, USA 2012. http://compass.seacadets.org/pdf/nrtc/bmr/14325_in d.pdf, (Mrtm/Nav - Amer) {558}