Final Answer:
For E-7, the advancement exam is held semi-annually, in March and September. A selection board is convened in June and December, and results are posted in early July and January, respectively.
Step-by-step explanation:
The completion of the statement provides a clear timeline for the E-7 advancement process. The advancement exam for E-7 is conducted semi-annually, occurring in March and September. Following the exam, a selection board is convened in June and December to evaluate eligible candidates.
The release of the results takes place in early July and January, corresponding to the respective exam months. This structured schedule ensures a regular and predictable advancement process for military personnel at the E-7 level.