The nation's top military officer says ethics training for senior leaders is adequate but should begin earlier in an officer's career and be reinforced more frequently.

That's one of two initial findings by Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, in response to a request by Defense Secretary Leon Panetta for a review of ethics training following a series of highly publicized ethical lapses by top military officers.

The other finding was that the Pentagon should look closer at perquisites for top officers. Dempsey wonders whether those - which in some cases include household staffs, drivers and aides to carry generals' bags - are necessary and sensible.

Dempsey declined to release a copy of his report, but Pentagon press secretary George Little summarized Dempsey's two main findings.