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.

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.

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

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. City of East Moline firstarmydivwest FirstArmyDivEast

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.

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

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

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.

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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.

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Command Sgt. Maj. Kenyon Brown accepts the guidon of the 1st Battalion, 315th Brigade Support Battalion during a chance of responsibility ceremony. Brown replaced Sgt. Maj. Luis Carmona.

Col. Douglas Serie, 5th Armored Brigade commander, talks with 5th Armored Soldiers during a combined arms live fire at Dona Ana Range Complex, New Mexico. The brigade provided OC/T support to the exercise.

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First Army Academy's Sgt. 1st Class Adam Drummonds earns the prestigious Master Army Instructor Badge! Fewer than 100 Soldiers across the entire U.S. Army this distinguished badge and is the first to earn it at the First Army OC/T Academy. FORSCOM 🇺🇸

Soldiers with the 157th Infantry Brigade gather to be recognized for their excellence, which included playing a key role in the first-ever back-to-back CTE and MOBEX executed by an Army National Guard unit.

BUILDING PARTNERSHIPS, INCREASING READINESS Soldiers with the 189th Infantry Brigade work alongside members of the Washington Army National Guard's 81st Stryker Brigade Combat Team during Raven Focus.

This is who we are. Partners of the National Guard and U.S. Army Reserve ensuring America has lethal forces ready to fight and win anywhere. FORSCOM 🇺🇸

STAYING FIT TO FIGHT Soldiers with the 120th Infantry Brigade execute circuit training during an early-morning PT session.