Very important for Boot Camp... and for every day in the Navy.
This is stuff they want you to know backwards and forwards by your first week or two.
E-1. Seaman (Airman, Fireman, Constructionman) Recruit: no insignia
E-2. Seaman Apprentice: two white diagonal stripes
E-3. Seaman: three white diagonal stripes
Petty Officers (collar): eagle with chevron(s)
Petty Officers (sleeve): eagle, rating symbol, chevron(s)
(E-4: 1 for third class, E-5: 2 for second class, E-6: 3 for first class)
Chief Petty Officer (collar): a GOLD FOULED ANCHOR
(E-7)................with a SILVER, SUPER-IMPOSED "U.S.N."
******(you may want to memorize this EXACT wording)*****
Chief Petty Officer (sleeve): eagle, rocker, rating symbol, 3 chevrons
E-8. Senior Chief Petty Officer: add ONE silver star above both
E-9. Master Chief Petty Officer: add TWO silver stars above both
Command Master Chief: two silver stars with a silver star in lieu of a rating symbol
Fleet Master Chief: two gold stars with a gold star in lieu of a rating symbol
E-9. MCPON: three gold stars with a gold star in lieu of a rating symbol
O-1. Ensign: one gold bar (collar), one 1/2 inch gold stripe (sleeve)
O-2. LT JG: one silver bar (collar), one 1/2 inch & one 1/4 inch gold stripes
O-3. Lieutenant: two silver bars (collar), two 1/2 inch gold stripes (sleeve)
O-4. LT Com.: one gold oak leaf (collar), two 1/2 inch & one 1/4 inch gold stripes
O-5. Commander: one silver oak leaf (collar), three 1/2 inch gold stripes (sleeve)
O-6. Captain: one silver spread eagle (collar), four 1/2 inch gold stripes (sleeve)
O-7. Rear Adm, Lower Half: one silver star (collar), one 2-inch gold stripe (sleeve)
O-8. Rear Adm, Upper Half: two silver stars, one 2-inch & one 1/2 inch gold stripes
O-9. Vice Admiral: three silver stars (collar), one 2-inch & two 1/2 inch gold stripes
O-10. Admiral: four silver stars (collar), one 2-inch & three 1/2 inch gold stripes