14 U.S. Code § 422 - Status of recalled personnel
This provision is desirable because many enlisted men and low-ranking officers may now retire with higher grade which they previously held on a temporary basis. If recalled in the higher grades, they might not be capable of holding same at the time of recall. 81st Congress, House Report No. 557.
1986—Pub. L. 99–348 substituted “rate” for “rating”.