The identification system, comparing the DNA from unidentified combat dead with the DNA in samples in the repository, would allow positive identification of the casualties even when only partial remains are recovered.

This would be a significant improvement over the current means of identifying partial remains, which are now identified by looking for clues to match against medical records, Major Weedn said. For example, if a leg was found that showed signs that it had once been broken medical records would be checked for a similar break.

DNA identification was used in the Persian Gulf war, Major Weedn said, but the system could have been even more useful if there had been a repository of data on all military personnel.

Major Weedn said the repository would contain a preserved blood sample and epithelial cells obtained by swab from the mouth of every member of each branch of the military service. Protecting Confidentiality

A few drops of dried blood on filter paper would be put on individualized cards that also contain a fingerprint, a signature and a bar code with an identification number. One card and the oral swab would be stored in a refrigerated central repository here and another card would be kept with each service person's medical records, he said.