Final answer:
Retirement exams and evaluations time frames can vary by military branch or country, but in the U.S. military, they are typically started 6 months prior to retirement.
Step-by-step explanation:
The specific time frame for completing retirement exams and evaluations may vary depending on the branch of the military service or the country's policies in which the service member is serving. However, it is common for military members to begin their retirement processing several months before their actual retirement date.
For example, in the U.S. military, members are often advised to start their medical evaluations and processing at least 6 months prior to their retirement to ensure that all necessary paperwork and medical exams are completed in time. The exact timeline can be found in the service-specific regulations or by consulting with a personnel officer.