In this undated image provided by the U.S. Army, Sgt. Bowe Bergdahl poses in front of an American flag. U.S. officials say Bergdahl, the only American soldier held prisoner in Afghanistan, was exchanged for five Taliban commanders being held at Guantanamo Bay, Cuba, according to published reports. Bergdahl is in stable condition at a Berlin hospital, according to the reports. (Photo by U.S. Army via Getty Images)
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In this undated image provided by the U.S. Army, Sgt. Bowe Bergdahl poses in front of an American flag. U.S. officials say Bergdahl, the only American soldier held prisoner in Afghanistan, was exchanged for five Taliban commanders being held at Guantanamo Bay, Cuba, according to published reports. Bergdahl is in stable condition at a Berlin hospital, according to the reports. (Photo by U.S. Army via Getty Images)
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In this undated image provided by the U.S. Army, Sgt. Bowe Bergdahl poses in front of an American flag. U.S. officials say Bergdahl, the only American soldier held prisoner in Afghanistan, was exchanged for five Taliban commanders being held at Guantanamo Bay, Cuba, according to published reports. Bergdahl is in stable condition at a Berlin hospital, according to the reports. (Photo by U.S. Army via Getty Images)
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Story highlights

Army general says jail time would be "inappropriate" for Sgt. Bowe Bergdahl

Taliban held Bergdahl captive for five years

Authorities say Bergdahl deserted his unit in 2009

San Antonio, Texas CNN —  

The Army general who led the investigation into Bergdahl’s actions in Afghanistan testified last month that jail time would be “inappropriate.”

Maj. Gen. Kenneth Dahl said he interviewed Bowe for a day and a half and “did not find any evidence to corroborate the reporting that Bergdahl was … sympathetic to the Taliban.”

Instead, Dahl said, Bergdahl wanted to call attention to what he considered poor leadership of his unit. Bergdahl believed that by leaving his observation post and running 23 kilometers (about 14 miles) to a nearby base he could cause a stir and gain access to a high-ranking officer to complain, Dahl said.

Dahl testified during September’s Army Article 32 preliminary hearing held to determine whether Bergdahl will face a court-martial.

Bowe Bergdahl investigation leader says GI should not face jail time

Bergdahl will not testify, defense attorney Eugene Fidell told the military court at Joint Base San Antonio.

Bergdahl vanished in June 2009 after he deserted his unit, authorities said.

The incident set off a series of events that included his five-year capture by the Taliban. President Barack Obama later freed five members of the terror network held at Guantanamo Bay in exchange for Bergdahl last year.

As part of the controversial prisoner swap, Bergdahl returned to the United States. In March, the military charged him with desertion and misbehavior before the enemy.

Prosecution’s case

Dahl testified that he thought Bergdahl was “very bright and well-read.”

When asked what in Bergdahl’s background might have caused his behavior in the military, Dahl said that the combination of growing up in rural Idaho on the “edge of the grid … being home-schooled” and the fact that he “internalized a lot of what he read” resulted in him having “idealistic and unrealistic expectations of people.”

Though Bergdahl was not duty-bound to comply with the investigation, he did so and submitted to a day and a half interview. Bergdahl did not exercise his right to silence at the start of the interview, Dahl said.

New Bergdahl letter outlines torture

Dahl said last month he didn’t “believe there is a jail sentence at the end of this process.”

The last witness from the Bergdhahl defense team was Terrence Russell, a civilian who works for the Department of Defense Joint Personnel Recovery Agency. Russell debriefed Bergdahl.

Russell said Bergdahl experienced “horrific” conditions and that his “experience ranks in the same echelon of horrible conditions that we have not seen in 60 years,” referring to troops held in Vietnam.

He described Bergdhahl as “an army of one, he had to fight the enemy alone for 4 years 11 months. You cannot overestimate how difficult that is. ”

At Thursday’s hearing, government prosecutors called witnesses who represented Berghdahl’s chain of command.

His former platoon leader, Capt. John Paul Billings, recounted being awakened early by soldiers telling him Bergdahl was missing.

“I didn’t really know what to say. I was in shock, in absolute disbelief that I couldn’t find one of my own men. It’s a hard thing to swallow,” he said, adding that a squad of men was immediately sent out to look for him.

Read the statement and Bergdahl’s letter

On cross examination, Billings said Bergdahl appeared to be completely normal the day before he disappeared, that he had been dedicated to the mission, and had an outstanding record of performance.

The defense also asked the platoon leader if he had been made aware that Bergdahl had a psychological discharge from the U.S. Coast Guard, or that Bergdahl “possessed a severe mental disease or defect?”

Billings said if he had known of any such mental issue, he would have recommended him to specialist care.

During the hearing, Berghdahl was seated at a long table with his civilian and military defense attorneys. He spent much of the proceedings looking down as he took notes on a pad in his lap.

Prisoner swap criticized

Some in the military and those who fought alongside Bergdahl in Afghanistan blasted the prisoner swap deal that freed him.

Obama has hailed Bergdahl’s safe return to the United States.

“Sgt. Bergdahl has missed birthdays and holidays and the simple moments with family and friends,” Obama said, standing alongside Bergdahl’s parents. Later, he detailed how he’d swapped five Taliban detainees held at Guantanamo Bay in exchange for Bergdahl’s return from five years of captivity in Afghanistan.

Bowe Bergdahl Fast Facts

A court-martial, which is seeming less likely, would put the White House in a precarious situation. It has steadfastly defended the decision to recover Bergdahl amid backlash from Republicans and some who served with him in Afghanistan.

U.S. officials said at the time of the recovery that Obama’s national security team was unanimous in its support of the prisoner exchange that ultimately returned Bergdahl to the United States, and that concerns about his physical health prompted them to circumvent a requirement to notify Congress about pending prisoner releases.

Concerns about his physical health prompted them to circumvent a requirement to notify Congress about pending prisoner releases, authorities said at the time.

Obama himself cited a “sacred rule” in attempting to rescue American servicemen and women, no matter the circumstances surrounding their capture.

“We still get an American soldier back if he’s held in captivity. Period. Full stop. We don’t condition that,” he said during a June foreign swing in Europe.

Obama made those comments as members of Bergdahl’s unit were coming forward to describe, in their telling, how Bergdahl purposely abandoned his post before being taken captive in remote Afghanistan. Some suggested the U.S. effort to rescue him was misguided.

The allegations that Bergdahl had abandoned his post were well known before his rescue became public, though they hadn’t yet been subject to the type of Army investigation that followed his return.

Even after that report surfaced, the White House expressed no regret at the decision to exchange Bergdahl. As proceedings continue that could result in a court martial, Obama’s initial stance – that rescuing an American soldier was worth the cost, no matter what – appears unlikely to change.

CNN’s Chris Lett reported from San Antonio, Texas. CNN’s Faith Karami, Ashley Fantz, Martin Savidge, Ralph Ellis and Tristan Smith contributed to this report.