A few months before his arrest, Manning was demoted a stripe to private for getting into a fight with another soldier, a military official told CNN. The circumstances were unclear.
The military first held Manning in a Kuwait jail for allegedly leaking the helicopter video, before moving him to Quantico.
When WikiLeaks published its Afghanistan war documents in July 2010 and Manning became the prime suspect in those leaks, people across the world weighed in. Some called him a traitor. Others banded together to support him.
"If he feels like no one out there cares, he's wrong," Jeff Paterson, an ex-Marine who started bradleymanning.org, said in 2010.
The online support network raised thousands for his defense, and WikiLeaks has continued to support Manning.