"I can confirm that General Smiley is recovering from a gunshot wound," Lt. Cmdr. Grant Neeley, a spokesman for Resolute Support, the NATO-led training command in Afghanistan, told ABC News.
"He is being treated at a Resolute Support hospital in Kandahar," said Neeley.
Smiley is the commander of the Training and Advise and Assist Command-South (TAAC-South) that has the lead in advising Afghan security forces in southern Afghanistan and had assumed command in late June. He is a general with the California National Guard, in command of the Guard’s 40th Infantry, which is one of the lead units in Kandahar.
The identity of the U.S. service member injured in the attack had not been disclosed until Sunday after it was first reported by the Washington Post.
Carried out by a gunman believed to be an Afghan bodyguard, Thursday's attack killed the top police official in Kandahar Province as well as the province's top intelligence official. The governor of Kandahar was also wounded, as was another American civilian employee and an Afghan interpreter.
General Austin Scott Miller, the top U.S. general in Afghanistan, was present during the shooting that started after his meeting with the Afghan officials.
The gunman opened fire as they waited outside for Miller's helicopter to arrive. The gunman was shot and killed almost immediately.
Miller told reporters Friday that he believes that the Afghan officials were the targets of the attack.
Miller, like the other U.S. personnel around him, pulled out his handgun, which is standard practice in such a situation.
"When there’s a threat, we will draw our weapons,” said Col. Dave Butler, a Resolute Support spokesman. "That’s what we’re trained to do and Gen. Miller is no exception."
What followed was a combination of U.S. and Afghan forces securing the area and tending to the wounded.
Miller had some of the wounded transported aboard his helicopter so they could quickly receive medical treatment.
The Taliban quickly claimed responsibility for the attack that appeared to be the closest a U.S. commanding general in Afghanistan has come to being shot or seriously harmed.
The insider attack delayed the key parliamentary elections in Kandahar by a week, they proceeded on schedule Saturday in the rest of the country.