On November 12, 2015, Groberg received the nation's highest award for military valor, the Medal of Honor, for his actions.

[8] He entered the United States Army in July 2008 and attended Officer Candidate School at Fort Benning, Georgia.

[3] Upon returning home in June 2010, Groberg continued serving as a platoon leader until he was reassigned as an infantry company executive officer from October 2010 to November 2011.

[9] The patrol's escort mission included moving on foot from Forward Operating Base Fiaz to the provincial governor's compound in Asadabad, Kunar, Afghanistan for a weekly security meeting.

As the patrol advanced towards the governor's compound, they reached the choke point along the route, a small bridge spanning a canal feeding the Kunar River.

Maj. Kevin J. Griffin, U.S. Army Maj. Thomas E. Kennedy, and U.S. Air Force Maj. Walter D. Gray) and U.S. Foreign Service Officer Ragaei Abdelfattah from the U.S. Agency for International Development were killed and several others were injured.

[9] As a result of his actions, Groberg sustained the loss of 45 to 50 percent of his left calf muscle with significant nerve damage, a blown eardrum, and a mild traumatic brain injury.

President Barack Obama awarded the Medal of Honor to Groberg on November 12, 2015 at a ceremony at the White House.

[12][13]The official citation reads; Captain Florent A. Groberg distinguished himself by acts of gallantry and intrepidity at the risk of his life above and beyond the call of duty while serving as a Personal Security Detachment Commander for Task Force Mountain Warrior, 4th Infantry Brigade Combat Team, 4th Infantry Division, during combat operations against an armed enemy in Asadbad, Kunar Province, Afghanistan on August 8, 2012.

Selflessly placing himself in front of one of the brigade commanders, Captain Groberg rushed forward, using his body to push the suspect away from the formation.

[14]Groberg married Carsen Alexa Zarin on November 17, 2018, who is originally from Saint Louis, Missouri and is of Jewish ancestry.

Although a self-described lifelong Republican, he endorsed Hillary Clinton in the 2016 United States presidential election and spoke at the 2016 Democratic National Convention.