The American, 31, is charged with endangering his comrades by walking away from a remote post in Afghanistan in 2009.
At his trial, in Fort Bragg, he told the judge that he now understands that what he did caused others to search for him.
His guilty pleas brings the highly politicized saga closer to an end eight years after Mr Bergdahl’s disappearance in Afghanistan.
His actions set off search missions by scores of his fellow service members.
More follows

vCard.red is a free platform for creating a mobile-friendly digital business cards. You can easily create a vCard and generate a QR code for it, allowing others to scan and save your contact details instantly.
The platform allows you to display contact information, social media links, services, and products all in one shareable link. Optional features include appointment scheduling, WhatsApp-based storefronts, media galleries, and custom design options.