Cathay Williams’ hidden military story: the Black only woman to serve as a Buffalo Soldier

A fearless, formerly enslaved woman reshaped U.S. military history by enlisting in disguise and serving on the Western frontier.

Cathay Williams’ journey into American history began long before she put on a uniform. Born into slavery in 1844 in Independence, Missouri, she entered the world with systems already stacked against her. Her father was free. However, because her mother was enslaved, she too was legally classified as property. Her early life unfolded on the Johnson plantation near Jefferson City, where she worked as a house girl—duties that, unknowingly, prepared her for the long, grueling military years ahead.

Her first brush with the U.S. Army arrived during the Civil War. At just 17, when Union troops occupied Jefferson City, enslaved people were labeled “contraband” and pressed into support roles. Williams was taken to work for officers as a cook and washerwoman under the 13th Army Corps. She didn’t want to go, she later admitted, and she didn’t yet know how to cook. But she learned quickly, and that skill would become a lifeline.

Those war years placed her in the shadow of major campaigns—from the Battle of Pea Ridge to the burning cotton fields of Arkansas and Louisiana. “I learned to cook after going to Little Rock,” she recalled, a small reflection of the massive changes shaping her world. By the time the war ended, she had crossed multiple states, served under General Philip Sheridan, and witnessed the country reshaping itself in real time.

Her military exposure wasn’t just labor. It was education. Independence. A glimpse into a life where she could choose her own future. And that glimpse would fuel a decision no other Black woman in U.S. history had ever made.

The Bold Decision That Changed Her Life — and Military History

On November 15, 1866, just a year after emancipation, Williams walked into a recruiting office in St. Louis. Women couldn’t enlist. Black women certainly couldn’t enlist. But she had a plan: she cut her hair, put on men’s clothing, and introduced herself as “William Cathay.”

It worked.

She passed the brief medical exam—doctors didn’t require soldiers to undress—and she officially became a member of Company A, 38th U.S. Infantry Regiment, one of the all-Black units that would soon earn the legendary name “Buffalo Soldiers.”

Her motivation wasn’t fame. It wasn’t rebellion. It was survival. “I wanted to make my own living and not be dependent on relations or friends,” she said years later. Only two people knew her secret: a cousin and a close friend. Everyone else saw “William,” a new recruit with a slight frame, a strong work ethic, and enough determination to carry a musket, stand guard, and march hundreds of miles across unforgiving terrain.

Right after enlisting, she caught smallpox, nearly died, and still came back to serve. That alone spoke volumes about her resilience.

Marching the Western Frontier with the 38th Infantry

Williams’ unit traveled far across the Western frontier—one of the harshest assignments in the post-war military. Their mission: protect settlers, guard mail routes, build infrastructure, and secure territories during the Indian Wars. For nearly two years, she marched through heat, rocky plains, mountain regions, and desert landscapes.

As “William,” she was stationed at Jefferson Barracks in Missouri, then Fort Riley and Fort Harker in Kansas, before heading deep into New Mexico at Fort Union, Fort Cummings, and Fort Bayard. Some marches spanned hundreds of miles. Supplies were inconsistent; weapons were inferior; conditions were brutal. Hospital logs show repeated visits—rheumatism, neuralgia, lingering effects of smallpox. But still, her identity remained hidden.

Her record showed no punishments, no disciplinary issues. In fact, some historians believe she may have been one of the first Black women to receive a Good Conduct Medal—though such awards weren’t formally tracked for someone in her situation.

She carried her musket. She handled guard duty. She fulfilled every expectation of a soldier in the frontier Army. And she did all of it while enduring the physical dangers of hiding her identity.

The Moment Her Secret Unraveled

By 1868, the toll on her body became impossible to mask. At Fort Bayard, after months of recurring illness, she fell extremely ill. The post surgeon who examined her made the discovery no one else had made in nearly two years.

She was a woman.

Once her identity became known, everything changed. Though she had served honorably, she was discharged on October 14, 1868, under the explanation of “feeble habit” and disability. Her paperwork referred to her as male, a quiet acknowledgement that the Army preferred to avoid public scandal over a woman infiltrating their ranks.

“Some of them acted real bad to me,” she later said of the soldiers who turned on her once the truth emerged. Still, she left the military with her head high, knowing she had done what no woman—Black or white—had ever done.

Life After the Army and a Fight for Independence

After leaving service, Williams didn’t vanish. She worked as a cook at Fort Union, then moved to Pueblo, Colorado, where she resumed her life as Cathay and briefly married. Her husband turned out to be, in her words, “no account.” He stole her money, jewelry, horses, and wagon. She had him arrested and kept moving—a pattern in her life of pushing forward, no matter the obstacle.

She eventually settled in Trinidad, Colorado, living independently as a seamstress and washerwoman. “I’ve got a good sewing machine and I get washing to do and clothes to make,” she told a reporter. She planned to claim land near a railroad depot, determined to build a life on her own terms.

In 1876, her story finally reached national ears when a St. Louis Daily Times reporter interviewed her. That interview is the reason we know her voice, her humor, her grit, and the extraordinary decisions she made in pursuit of freedom.

A Denied Pension and a Fading Public Record

By the late 1880s, Williams’ health had deteriorated. Diabetes, neuralgia, and rheumatism left her walking with crutches. She had all her toes amputated. She applied for a military pension, citing her service as “William Cathay.”

But the U.S. Army refused her.

Officials argued she didn’t qualify because her disability could not be proven to be service-related. Unspoken was the larger truth: her enlistment had technically violated the Army’s own rules, and they weren’t willing to acknowledge the debt they owed her.

She died around 1893, though no official record confirms the date. Her burial site is unknown—likely marked by a wooden headstone that has since disappeared.

Her life ended quietly. Her legacy did not.

Conclusion

Cathay Williams shouldn’t be a footnote in military history—she should be a chapter. She broke racial and gender barriers before the nation developed vocabulary for either fight. She served through illness, marched across the frontier, endured discrimination, survived abandonment, escaped an abusive marriage, earned her own living, and confronted the federal government for recognition she was never granted.

Today, busts, monuments, books, and classrooms are finally beginning to restore her place in the American story. As the first documented African American woman to serve in the U.S. Army, and the only woman to serve as a Buffalo Soldier, she embodies a legacy of courage that reshaped what Black women—and women as a whole—could claim in this country.

Her story is not just history. It’s a reminder that the fight for autonomy, dignity, and recognition has always included Black women willing to risk everything to break barriers no one else dared approach.

Cathay Williams didn’t just serve.

She made history that the world is only now learning to honor.