All 13 U.S. service members who died in the Aug. 26 airport attack in Kabul will be posthumously awarded the Purple Heart.

Both the Marine Corps and the Army told ABC News their members will receive the decoration after the Navy announced on Tuesday that the one member of its service that died was posthumously promoted and would also be awarded the Purple Heart.

“The 11 Marines killed-in-action while supporting Operation Freedom’s Sentinel will be awarded the Purple Heart," said Capt. Andrew Wood, Marine Corps spokesperson on Tuesday.

The Army’s 1st Special Forces Command said in a press release the day after the attack that its member who died, Army Staff Sgt. Ryan C. Knauss, was awarded the Purple Heart, Bronze Star medal and Combat Action Badge.

-ABC News' Ben Gittleson

Secretary of State Antony Blinken met with a group of unaccompanied minors from Afghanistan who are awaiting flights to the U.S. during his stop on Wednesday at Ramstein Air Base in Germany.

Reporters approached the facility as some kids were playing volleyball with U.S. personnel -- passing sleeping quarters with sleeping bags, Spiderman pillows and a cartoon animal on each door to help kids remember their pod.

"Many, many, many Americans are really looking forward to welcoming you and having you come to the United States," Blinken told a group of kids. "There are a lot of people who will look out for you and help you."

A young boy gifted Blinken a t-shirt, and he told them, "I will wear this in Washington and be able to tell everyone where I got it." The group laughed and applauded, according to reporters in the room.

One U.S. official who works on the reunification task force said that 11 young people will be departing Wednesday for the U.S. -- with 21 others leaving in the last five days and several more scheduled to depart in the days to come.

As of Tuesday, UNICEF and its partners which include the U.S. government have registered around 300 unaccompanied and separated children that have been evacuated from Afghanistan.

Former Afghanistan President Ashraf Ghani has apologized to Afghan nationals and denied he took millions from the country in a new statement on Wednesday, nearly three weeks after fleeing Afghanistan as the Taliban seized power with the fall of Kabul.

"I owe the Afghan people an explanation for leaving Kabul abruptly on August 15 after Taliban unexpectedly enter the city. I left at the urging of the palace security who advised me that to remain risked setting off the same horrific street-to-street fighting the city had suffered during the Civil War of the 1990s," Ghani said in the statement posted to Twitter.

"Leaving Kabul was the most difficult decision of my life, but I believed it was the only way to keep the guns silent and save Kabul and her 6 million citizens," he added.

He said allegations that “as I left Kabul I took with me millions of dollars belonging to the Afghan people” were “completely and categorically false.”

"I offer my profound appreciation and respect for the sacrifice of all Afghans, especially our Afghan soldiers and their families, through the last 40 years. It is with deep and profound regret that my own chapter ended in similar tragedy to my predecessors - without ensuring stability and prosperity," his statement read.

U.S. Secretary of State Antony Blinken arrived at Ramstein Air Base in Germany on Wednesday morning, where thousands of Afghan refugees are being processed and held before transiting onward.

Upon arrival at the giant U.S. air base, Blinken toured a makeshift terminal in Hangar 5, where some Afghans are awaiting flights to the United States. He was also briefed by U.S. military personnel on how the refugees are processed, with approximately 34,000 passing through Ramstein. Some 11,000 were still waiting to be processed in Hangar 5.

Blinken will also visit an area where some of the unaccompanied Afghan children, who were evacuated from Kabul without parents or guardians, are being housed amid efforts to locate family members to reunite them with.

Before Blinken landed at Ramstein, an official with the U.S. Department of State spoke to reporters and pushed back on recent reports about the evacuation efforts. The official denied that the State Department is standing in the way of any charter flights from taking off in Afghanistan, saying rather it is working with countries to secure rights for them to land elsewhere.

The official told reporters that the State Department is sending urgent messages to the Taliban's leadership, demanding they abide by their commitments on safe passage. The State Department is only aware of two charter flights seeking to leave Afghanistan, both run by private Afghan airline Kam Air, according to the official. So far, the State Department had not found anyone on the flight manifests from advocacy groups that have prompted security concerns, the official said.

The official also denied that the State Department exaggerated its role in the recent overland evacuation of four U.S. citizens, as two Republican congressmen have alleged. The department was in direct contact with the Texas family as well as the Taliban to facilitate the cross-border travel, according to the official.

-ABC News' Conor Finnegan