The U.S. left Afghanistan’s Bagram Airfield after nearly 20 years by shutting off the electricity and slipping away in the night without notifying the base’s new Afghan commander, who discovered the Americans’ departure more than two hours after they left, Afghan military officials said.

       Afghanistan’s army showed off the sprawling air base Monday, providing a rare first glimpse of what had been the epicenter of America’s war to unseat the Taliban and hunt down the Al Qaeda perpetrators of the Sept. 11 attacks on the United States.

       An Afghan soldier takes a selfie at the Bagram base after all U.S. and NATO troops withdrew.

       (Wakil Kohsar / Getty Images)

       The U.S. announced Friday that it had completely vacated its biggest airfield in the country in advance of a final withdrawal that the Pentagon says will be completed by the end of August.

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       “We [heard] some rumor that the Americans had left Bagram ... and finally by 7 o’clock in the morning, we understood that it was confirmed that they had already left Bagram,” said Gen. Mir Asadullah Kohistani, Bagram’s new commander.

       An Afghan helicopter takes off at the Bagram air base.

       (WAKIL KOHSAR/AFP )

       Vehicles left behind at Bagram airfield.

       (Haroon Sabawoon/Anadolu Agency)

       An Afghan soldier stands guard at a checkpoint near the Bagram airfield.

       (Haroon Sabawoon/Anadolu Agency)

       The Bagram base after the U.S. withdrew.

       (Wakil Kohsar / Getty Images )

       Mine resistant ambush protected vehicles known as MRAPs were left at the Bagram base.

       (Wakil Kohsar / Getty Images )

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       An Afghan soldier stands guard at the gate of a hospital facility inside the Bagram base.

       (Wakil Kohsar / Getty Images)

       A general view of the Bagram base.

       (Wakil Kohsar / Getty Images )

       Afghan soldiers sit at the Bagram base after the U.S. withdrawal.

       (Wakil Kohsar / Getty Images )

       A watchtower at the Bagram base.

       (Haroon Sabawoon / Anadolu Agency )

       Afghan soldiers move a cot inside a room at the Bagram base.

       (Wakil Kohsar / Getty Images )

       Afghan soldiers sit in a vehicle at the Bagram base after all U.S. and NATO troops left.

       (Wakil Kohsar / Getty Images )

       An Afghan soldier keeps watch after the U.S. withdrawal from the Bagram base.

       (Haroon Sabawoon / Anadolu Agency )

       Ammunition left at Bagram airfield.

       (Haroon Sabawoon/Anadolu Agency )

       Safety bunkers inside the Bagram air base.

       (WAKIL KOHSAR/AFP )

       The runway at Bagram air base.

       (WAKIL KOHSAR/AFP )

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