Specialist Calyn McLemore was found dead Friday night in a wooded area of Camp Blanding.
Officials with the sheriff's office said this is an "undetermined death investigation."
"The Clay County Sheriff's Office would like to thank all those agencies, media personnel and community members who supported us in this search," officials said in a Facebook post.
McLemore's death is still under investigation.
McLemore was attending a training course at Camp Blanding when he set out on a land navigation exercise on Wednesday, according to Keith Smith from the Clay County Sheriff's Office.
The exercise involved each of the 75 Reserve soldiers individually reaching three to four rally points designated on their maps in the woods surrounding Camp Blanding, before coming back to a meeting location.
Friday morning, officials were searching aerially and on the ground for McLemor and found several of McLemor's items, including his map and navigation tool, officials said.
Smith said the extreme heat and "extremely tough conditions" could have been a factor in McLemor's disappearance, especially if the solider "pushed himself to finish" the course and was dehydrated. Smith said the soldier may be wounded and wandered off course. Officials do not believe he went AWOL or there is anything suspicious about the situation.
Some parts of the heavily wooded area have swamps and marshes up to waist or chest deep, Smith said. Officials have also spotted dangerous wildlife in the area, including water moccasins.
Several agencies assisted the sheriff's office in the search, including Clay County Emergency Management, Florida Highway Patrol, Jacksonville Sheriff's Office, Putnam County Sheriff's Office, Pasco County Emergency Management, Baker County Sheriff's Office, Marion County Sheriff's Office, St. John's County Sheriff's Urban Search and Rescue Team, US Customs and Border, Camp Blanding Military personnel, and multiple air units.
Thousands of U.S. service members who've been sent to operate along the Mexico border will receive a military award reserved for troops who "encounter no foreign armed opposition or imminent hostile action."
The Pentagon has authorized troops who have deployed to the border to assist U.S. Customs and Border Protection (CBP) since last April to receive the Armed Forces Service Medal. Details about the decision were included in a Marine Corps administrative message in response to authorization from the Defense Department.
There is no end date for the award since the operation remains ongoing.
Photo: US District Court for the Eastern District of Virginia
A former sailor who was busted buying firearms with his military discount and then reselling some of them to criminals is proving to be a wealth of information for federal investigators.
Julio Pino used his iPhone to record most, if not all, of his sales, court documents said. He even went so far as to review the buyers' driver's license on camera.
It is unclear how many of Pino's customer's now face criminal charges of their own. Federal indictments generally don't provide that level of detail and Assistant U.S. Attorney William B. Jackson declined to comment.
Carson Thomas, a healthy and fit 20-year-old infantryman who had joined the Army after a brief stint in college, figured he should tell the medics about the pain in his groin he had been feeling. It was Feb. 12, 2012, and the senior medic looked him over and decided to send him to sick call at the base hospital.
It seemed almost routine, something the Army doctors would be able to diagnose and fix so he could get back to being a grunt.
Now looking back on what happened some seven years later, it was anything but routine.
U.S. Army Cpt. Katrina Hopkins and Chief Warrant Officer 2 James Rogers, assigned to Task Force Warhorse, pilot a UH-60 Black Hawk helicopter during a medical evacuation (MEDEVAC) operation at Camp Taji, Iraq, Dec. 18, 2018. (U.S. Army photo by Spc. Javion Siders)
U.S. forces must now ask the Iraqi military for permission to fly in Iraqi airspace before coming to the aid of U.S. troops under fire, a top military spokesman said.
However, the mandatory approval process is not expected to slow down the time it takes the U.S. military to launch close air support and casualty evacuation missions for troops in the middle of a fight, said Army Col. James Rawlinson, a spokesman for Combined Joint Task Force-Operation Inherent Resolve.