Rio Grande

Yorke's saber & scabbard disappear from his saddle when he gets shot by an arrow.

When Tyree steals Colonel York's horse, he rides off bareback, carrying a saddle only.

Later, his horse is saddled complete with blanket.

After hearing his son's name in the new arrivals' role call, Col.

Yorke comes out to speak to the troops.

When he does, he puts his hat on twice.

On the covered wagon carrying Kathleen Yorke during the Indian attack, when the driver falls off the canvas behind Mrs Yorke is wide open.

Later when another trooper jumps on to drive the wagon the canvas is closed tightly.

During the Indian attack on the wagon train, Kathleen Yorke is in the driver's seat of a wagon by herself.

There is another person visible in the back of the wagon who has the reins and is driving the wagon.

When the regimental singers are serenading Kathleen Yorke and General Sheridan outside Colonel Yorke's tent there are several lanterns hanging from the top of the opening.

The lantern on the right side of the tent post clearly has an electric light bulb in it.

After the wagon train is rescued, Sandy Boone remains behind with Mrs.

Yorke as the command rides off in pursuit of the captured children.

Later, he is present with the troops to be picked by Tyree to sneak into the Mexican village.

When Lt.

Yorke checks his son's height on the tent, you can see previous marks from another take.

When Recall is sounded after the children are rescued you hear the call blown, then it stops.

The horn is still being blown after the call stops.

When Quincannon is addressing the recruits about horsemanship, Sandy takes his hand out of his pocket and removes the hay straw from his mouth.

When the camera angle changes to behind Sandy, he has his thumb looped through his suspenders and the straw is back in his mouth.

When it changes to the front view of Sandy, his hand is back in his pocket.

While the guests are entering the grandstand, one of the troopers being honored is missing (Indian scout).

He shows up in the next scene as the last man in line.

For most of the movie, the troopers are carrying trapdoor carbines, including the escort for the women and children.

Of the three troopers who entered the church, Boone and Yorke had been a part of the escort however, Tyree escaped from the fort without any weapons.

The rest of the troop and the skirmishers are now carrying Winchester rifles when they charge the village.

When the Indian who shoots Lt.

Yorke ('John Wayne (I)' (qv)) with an arrow in the village is aiming at the Colonel from a window, the arrow clearly has no sharp tip on it at all, it's simply a rounded blunt end like a practice arrow.

When the Indian in the window lines up his aim to shoot John Wayne you can see there is no arrowhead on the tip.

When Travis meets up with Sandy and Jeff as they escort the children, he jumps off his horse and sits on the ground just in front of it.

After Sandy gives him a can of beans Travis is sitting to the side of the horse, then to the front of it, then to the side of it.

It looks like half the scene was filmed in a studio with Travis beside the horse and half in the open with Travis in front of the horse.

The movie is set in the around 1879-1880, 15 years after General Sheridan's campaign through the Shenandoah Valley.

One of the songs in the movie, "Down by the Glenside (The Bold Fenian Men)," however, was not written until 1916.

In Jeff's ride to fetch "his pappy" after the wagon train is ambushed, his hat is alternately on and off of his head.

At the end of the scene where Trooper Tyree is arrested (when Mrs.

Yorke is complaining about "Yankee justice") the shadow of a boom mic is visible behind Sgt.

Quincannon.

Obvious shadow of boom mic on ground behind Lt.

Colonel Yorke, from 27:44 to 27:55, during conversation of Kathleen calling Quincannon an arsonist.

That the Rio Grande at El Paso is about 500 miles from Monument Valley is more of a production value than an error.

When crossing the Rio Grande from the United States, the water flows right to left.

In this movie, the water is flowing left to right.