Mr. Rumsfeld prefers a more flexible approach that should allow for reductions in overall troop strength.
The overall troop strength in Kosovo is well below levels pledged by countries last summer at the end of the conflict.
But because fewer Guard forces will leave this year than had been anticipated, the Guard still expects to maintain its overall troop level at 350,000.
The British memo discusses a possible reduction in overall troop strength, including the United States and its allies, from 176,000 to 66,000 in 2006.
He has announced plans for a 10% reduction in overall troop numbers by 2016 and some pay increases to attract and retain able recruits.
The report said the North's overall troop strength had remained the same since 2008, when the active-duty force was estimated at 1.1 million.
The report, based on a review conducted every two years, said the North's overall troop strength remained the same, at an estimated 1.1 million.
That would ease the strain on the Army and allow it to focus on managing overall troop numbers for Iraq, as well as movements of forces inside the country as required by commanders to meet emerging threats.
It has been known since the spring that the White House was considering options for reducing combat forces in Iraq by almost half in 2008, which could bring overall troop levels below 100,000.
CHARLESTON, S.C., May 5 — Rudolph W. Giuliani called on Saturday for a large-scale increase in the overall troop strength of the Army and the creation of a special force to specifically handle post-combat operations.
