[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/02/02/art.gates.gi.jpg caption="Gates will brief Obama Monday."]WASHINGTON (CNN) - President Barack Obama will get the nuts and bolts when Defense Secretary Robert Gates briefs him Monday afternoon about specific plans for adding 15,000 more troops to Afghanistan.
Three U.S. military sources have confirmed to CNN that Gates will present the plan when he meets with Obama and Biden Monday afternoon.
On Friday, Gates received the military's plans for sending three additional brigades to the war zone, but deferred on signing off on the plan until he could brief the new president.
The plan calls for ultimately sending two additional combat brigades - most likely one Army and one Marine Corps unit - and a brigade of trainers for Afghan security forces.
Military sources emphasize they do not expect the Obama to get involved in the minute details of deployment orders, but since this is the first major decision of his presidency about troop deployment, Gates wanted to brief him personally.
Monday's meeting follows a visit by Obama on Jan. 28 to the Pentagon for what was described as an "unvarnished" give-and-take on how to move forward in America's two wars in Iraq and Afghanistan.