Lt. Col. Cesare A. Santarosa bids farewell to the 3-395 Infantry Regiment, 188th Infantry Brigade, during a change of command ceremony at Fort Stewart, Georgia.

First Army Commanding General, Lt. Gen. Mark Landes, fires the ceremonial first pitch before the Blue Jays-White Sox game on Wednesday at Rate Field in Chicago. The Army's 250th birthday was also recognized.

A Soldier with the 85th U.S. Army Reserve Support Command takes aim during the unit's range qualification.

A Soldier with the 85th U.S. Army Reserve Support Command Headquarters takes aim during the unit's range qualification.

A Soldier with the 189th Infantry Brigade looks over a Small Unmanned Aircraft System during a course that gave students a better understanding of counter-UAS reconnaissance, surveillance, and battlefield capabilities.

Happy 4th of July from East Moline! First Army's Soldiers carry the same ideals of America's Founders as we serve our nation to defend freedom at home and around the world. @EastMolineCity @firstarmywest @FirstArmyDivEas

Soldiers with the 157th Infantry Brigade keep their Combat Lifesaver skills sharp during a medical training session.

Members of the 334th Brigade Support Battalion load a notional casualty for transport during a mobilization exercise. Soldiers with the 157th Infantry Brigade are serving as OC/Ts during the MOBEX.

First Army Commanding General, Lt. Gen. Mark Landes (left) and First Army CSM, Command Sgt. Maj. Christopher Prosser (right) welcome the Secretary of the Army, Honorable Dan Driscoll, to First Army headquarters on Rock Island Arsenal, Illinois, on Monday.

One year older than the nation it defends, the U.S. Army has dedicated itself to fighting and winning the nation's wars for 250 years. Happy Birthday Army. This We'll Defend. First In Deed!

The 81st D-Day commemoration has begun in France. Take a look at some more First Army history and stay tuned for a lot more from the First Army team in France!. #dday81 #WWIII

It's 5 days until the 81st anniversary of D-Day. As the First Army team prepares to commemorate this occasion, take a look at some of the sights as allied forces, commanded by First Army secured a foothold in Europe. @USArmyEURAF @FORSCOM

Buoyed by gains on D-Day, First Army and the rest of the Allied Forces worked their way through the hedge rows and launched Operation Cobra, which broke through the German lines. Video by Staff Sgt. Marie Alth

Buoyed by gains on D-Day, First Army and the rest of the Allied Forces worked their way through the hedge rows and launched Operation Cobra, which broke through the German lines. Video produced by Staff Sgt. Marie Alth

First Army and the @QCRiverBandits were honored to welcome the 50 newest members of the United States military. @USArmy @GoArmy

It's one week until the 81st anniversary of D-Day. As First Army prepares to return to France to honor the service of the Allied troops who fought to end tyranny, stay tuned over the next few days while we post videos about the commemoration and First Army's history at Normandy.