### Question
How is the term active duty defined?


### Answer
The term **active duty** is defined in *42 U.S.C. § 410* as the following:

> “active duty” as described in paragraph (21) of section 101 of title 38, except that it shall also include “active duty for training” as described in paragraph (22) of such section

#### Citation:
  - *42 U.S.C. § 410*
  - Heading: **CHAPTER 7-SOCIAL SECURITY > SUBCHAPTER II-FEDERAL OLD-AGE, SURVIVORS, AND DISABILITY INSURANCE BENEFITS**

