For the first time since the trial began, the courtroom at Fort Meade, Md., was full, and some spectators had to be accommodated in an overflow area where the proceeding could be watched on a live feed.
Manning has already pleaded guilty to lesser charges and faces up to 20 years in prison.
He is charged with 22 counts, and prosecutors are seeking to have him convicted on the more serious charges of aiding and abetting the enemy and violating the Espionage Act. If convicted, he could be sentenced to life in prison.
Prosecutors rested their case last week after calling more than 80 witnesses. Defense lawyer David Coombs is expected to call nearly 30 witnesses. On Monday, retired Col. Morris Davis, the former chief military prosecutor at Guantanamo Bay, Cuba, took the stand.
Davis, who is now a critic of the Obama administration’s failure to close the detention facility, described the Guantanamo Detainee Assessment Briefs that Manning gave WikiLeaks as merely “background information.” He said they were not very useful for the prosecutors who assessed which detainees should face military commissions. “They were so wildly inaccurate,” he said.
Three military witnesses testified Monday about a lack of computer security at the forward operating base in Iraq where Manning worked. Capt. Steven Lim, Manning’s superior, said it was standard procedure for analysts to copy information from the secure computer network onto CDs. Computers at the base constantly crashed, and in an effort to save work, many analysts saved intelligence products and other information to CDs. Those CDs were often unmarked and scattered around the workplace, Lim said.
The prosecution had sought to portray Manning as reckless for copying material onto CDs and said it was a violation of military procedure.
Chief Warrant Officer 2 Joshua Ehresman, another of Manning’s superiors, described the analyst’s work as superior. “He was our best analyst by far. Most soldiers, you would have to spell it out. He would come up with exactly what you were looking for,” Ehresman said.
The defense also filed four motions to dismiss the charges of aiding the enemy and computer fraud and five counts of stealing government property. The defense said the government had not presented enough evidence to secure a conviction. The motions were not argued orally and will be ruled on this week by Judge Denise Lind, an Army colonel.