[Alouette]

The image was reversed, why is the US flag backwards?

[brewcrew]

It's called "Flag Forward." The flag on the right shoulder of the uniform displays the star field to the front of the body as if to imply the wind is in the face.

[dpa5923]

From https://www-perscom.army.mil/tagd/tioh/FAQ/FAQ.htm

WEAR OF THE FLAG PATCH BY ARMY PERSONNEL. HQDA policy is that during joint or multi-nation operations, soldiers are authorized to wear the full-color U.S. flag cloth replica (approximately 2"x3") on utility and organizational uniforms. Wear of the cloth replica is at the discretion of the organizational commander. Soldiers are not authorized to wear the full-color replica upon their return to home station.

The DA policy states that when the patch is authorized for wear, it should be sewn one half inch below the right shoulder seam. If a right shoulder sleeve insignia for former wartime service is worn, the flag patch will be placed one eighth inch below the right shoulder sleeve insignia. The cloth replica is worn so that the star field faces forward or to the flag’s own right. When worn on the right sleeve, it is considered proper to reverse the design so that the union is at the observer’s right to suggest that the flag is flying in the breeze as the wearer moves forward.

[Phantom Lord]

The flag is not backwards. The field of blue is always to point in the direction of forward motion.

[XHogPilot]

The image was reversed, why is the US flag backwards?

The US flag is not "reversed". It is displayed this way to signify the soldier walking forward into battle.