Yuma celebrates Army’s 250th Birthday with free public event

By Mark SchauerJune 14, 2025

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1 / 5 Show Caption + Hide Caption – U.S. Army Yuma Proving Ground Commander Col. John Nelson provides keynote remarks at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025. (Photo Credit: Mark Schauer) VIEW ORIGINAL
Soldiers from the elite Airborne Test Force at U.S. Army Yuma Proving Ground interact with crowds at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025.
2 / 5 Show Caption + Hide Caption – Soldiers from the elite Airborne Test Force at U.S. Army Yuma Proving Ground interact with crowds at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025. (Photo Credit: Mark Schauer) VIEW ORIGINAL
U.S. Army Yuma Proving Ground Wildlife Biologist Daniel Steward (right) interacts with crowds at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025.
3 / 5 Show Caption + Hide Caption – U.S. Army Yuma Proving Ground Wildlife Biologist Daniel Steward (right) interacts with crowds at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025. (Photo Credit: Mark Schauer) VIEW ORIGINAL
U.S. Army Yuma Proving Ground Commander Col. John Nelson (left) swears in new Army recruits at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025.
4 / 5 Show Caption + Hide Caption – U.S. Army Yuma Proving Ground Commander Col. John Nelson (left) swears in new Army recruits at the 250th Army Birthday celebration at Colorado River State Historic Park on June 14, 2025. (Photo Credit: Mark Schauer) VIEW ORIGINAL
U.S. Army Yuma Proving Ground's youngest and oldest Soldiers present cut the 250th Army Birthday cake at a public celebration at Colorado River State Historic Park on June 14, 2025.
5 / 5 Show Caption + Hide Caption – U.S. Army Yuma Proving Ground's youngest and oldest Soldiers present cut the 250th Army Birthday cake at a public celebration at Colorado River State Historic Park on June 14, 2025. (Photo Credit: Mark Schauer) VIEW ORIGINAL

Yuma’s Colorado River State Historic Park, which was an Army Quartermaster Depot from 1869 to 1884, hosted a free public event for the Army’s 250th birthday, and U.S. Army Yuma Proving Ground (YPG) was there.

The celebration, in planning for more than six months, was spearheaded by park director Tammy Snook with the support of the Yuma Crossing National Heritage Area that oversees the facility.

The event, which ran from 9:00 a.m. to 1:00 p.m., drew crowds in the high hundreds before record temperatures hit Yuma in force.

“I wasn’t surprised, but I have to say I was delighted,” said YPG Commander Col. John Nelson, who expressed gratitude for the opportunity to share YPG’s story with the broader Yuma community.

Visitors to YPG’s display got up close and personal with the gear used and tested by the elite Soldiers of the Airborne Test Force, saw equipment tested at YPG like the Joint Light Tactical Vehicle (JLTV) and Armored Mult-Purpose Vehicle (AMPV), as well as a Bradley Fighting Vehicle and M119 howitzer. YPG’s weapon operators also brought out mortars to show the visitors and served as subject matter experts on YPG’s artillery testing mission throughout the event.

In addition to serving as oldest Soldier present to cut the traditional Army cake, Nelson provided keynote remarks at the event before swearing in a group of newly enlisted Army recruits in front of a large crowd of attendees.

“Celebrating the 250th anniversary at the Colorado River State Historic Park is another opportunity to remind the folks in Yuma that the Army has been here a long time and will be here for the next 100 years,” said YPG Command Sgt. Maj. Mark Millare. “Telling the story to make sure the community knows who we are is very important to us.”

The opening ceremony also featured Yuma Mayor Douglas Nicholls reading a City of Yuma Proclamation honoring the Army’s semiquincentennial. The formal parts of the event were emceed by former YPG Commander Col. (ret) Rob Filbey, who commanded the post from 1996 to 2000. In addition to multiple other participants with booths, games for children, and presentations, there were free hot dogs and sodas for eventgoers.

Yuma County Sheriff Leon Wilmot, Yuma County Supervisor Darren Simmons, and Cocopah Economic Development Director Gary Magrino brought several vintage Army vehicles on display and multiple other exhibitors will be present for the fun.

“It goes to show you why Yuma was recently awarded the title of Great American Defense Community,” said Nelson. “There is a long history of support for both Yuma Proving Ground and MCAS-Yuma.”