Final answer:
Upon completing 30 years of active duty service, you qualify for Regular Retirement, which is for individuals who have fulfilled a full and lengthy career. This contrasts with Early, Special, and Voluntary Retirement, each having different eligibility requirements and implications.
Step-by-step explanation:
Upon completion of 30 years of active duty service, you are qualified for what is commonly referred to as Regular Retirement. This classification of retirement is applicable to those who have served a long and full career, typically reaching the standard retirement age. Military and civilian careers alike can provide retirement benefits after such extensive service.
It's important to differentiate between the types of retirement. Early Retirement may be offered under specific circumstances before reaching the typical retirement age or service requirements. Special Retirement can apply to certain roles with unusual requirements or early retirement incentives. Lastly, Voluntary Retirement is a broad term that may apply to individuals who choose to retire before the standard age or necessities and may not always guarantee full benefits.
In the context of the American workforce and social security system, after a requisite period of work, workers may opt to start receiving retirement benefits based on their lifetime earnings and retirement contributions once they reach the full retirement age, which is dependent on their year of birth.