http://www.dtic.mil/whs/directives/corres/pdf/121507p.pdf
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(3) Active duty pursuant to section12301(h) of Reference (c)to receive medical care as
a result of a wound, illness, or injury while serving on active service as specified in paragraphs b(1) and b(2)of this section will be treated as a continuation of the original call or order to activeduty or active service for the purposes of reducing the eligibility age for non-regular retirement....
Look at Page 17...
(3) Active duty pursuant to section12301(h) of Reference (c)to receive medical care as
a result of a wound, illness, or injury while serving on active service as specified in paragraphs b(1) and b(2)of this section will be treated as a continuation of the original call or order to activeduty or active service for the purposes of reducing the eligibility age for non-regular retirement....