INTRODUCTION TO SONAR 



* All advancements require commanding officer's recommendation . 



t 1 year obligated service requiied for E-5 and E-6; 2 years for E-6, E-7, E-8 and E-9. 

 j^ Military leadership exam required for E-4 and E-5. 

 ** For E-2 to E-3, NAVEXAMCEN exams or locally prepared tests may be used. 



Figure 1-1. — Active duty advancement requirements. 



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