12. (_a_) Sergeant major, regimental; sergeant major, senior grade, Coast Artillery Corps; (_b_) quartermaster sergeant, senior grade, Quartermaster Corps; master hospital sergeant, Medical Department; master engineer, senior grade, Corps of Engineers; master electrician, Coast Artillery Corps; master signal electrician; band leader; (_c_) hospital sergeant, Medical Department; master engineer, junior grade, Corps of Engineers; engineer, Coast Artillery Corps. 13. Ordnance sergeant; quartermaster sergeant, Quartermaster Corps; supply sergeant, regimental. 14. Sergeant major, squadron and battalion; sergeant major, junior grade, Coast Artillery Corps; supply sergeant, battalion, Corps of Engineers. 15. (_a_) First sergeant; (_b_) sergeant, first class, Medical Department; sergeant, first class, Quartermaster Corps; sergeant, first class, Corps of Engineers; sergeant, first class, Signal Corps; electrician sergeant, first class, Coast Artillery Corps; electrician sergeant, Artillery Detachment, United States Military Academy; assistant engineer, Coast Artillery Corps; (_c_) master gunner, Coast Artillery Corps; master gunner, Artillery Detachment, United States Military Academy; band sergeant and assistant leader, United States Military Academy band; assistant band leader; sergeant bugler; electrician sergeant, second class, Coast Artillery Corps; electrician sergeant, second class, Artillery Detachment, United States Military Academy; radio sergeant. 16. Color sergeant. 17. Sergeant; supply sergeant, company; mess sergeant; stable sergeant; fireman, Coast Artillery Corps. 18. Corporal. In each grade and subgrade date of commission, appointment, or warrant determines the order of precedence. (Paragraph 9, Army Regulations, 1913.) =Section 4. Insignia of officers and noncommissioned officers.= The insignia of rank appearing on the shoulder straps, shoulder loops, or collar of shirt (when shirt is worn without coat) of officers are as follows: General: Coat of arms and two stars. Lieutenant general: One large star and two smaller ones. Major general: Two silver stars. Brigadier general: One silver star. Colonel: One silver spread eagle. Lieutenant colonel: One silver leaf. Major: One gold leaf. Captain: Two silver bars. First lieutenant: One silver bar. The grade of noncommissioned officers is indicated by chevrons worn on the sleeve. =Section 5. Extracts from the Articles of War.= (Relating to enlisted men.) CERTAIN ARTICLES TO BE READ AND EXPLAINED. ART. 110. Articles 1, 2, and 29, 54 to 96, inclusive, and 104 to 109, inclusive, shall be read and explained to every soldier at the time of his enlistment or muster in, or within six days thereafter, and shall be read and explained once every six months to the soldiers of every garrison, regiment, or company in the service of the United States. DEFINITIONS.