Retired Gen. Mark Milley and retired Gen. Kenneth McKenzie speak to the House Foreign Affairs Committee about the U.S. withdrawal from Afghanistan, Tuesday, March 19, 2024. The two retired generals publicly exposed for the first time the strain and differences the military leaders had with the Biden administration in the final days of the war. Two of those key differences included that the military had advised that the US keep at least 2,500 service members in Afghanistan to maintain stability.