The tool is only as good as its handler.
Poor planning, inadequate training, and eventual disinterest brought failure to every attempt in N. America to replace horses and mules with both species of camel. Though when the camels themselves did get a chance to work, they out-performed their equine competitors in strength and endurance (carrying up ~600 lbs over rough terrain, and over a week w/ no water). Unfortunately, the camels implacably disturbed any other stock present, and were often ill received by their human partners. The patience and expertise required to socialize these animals and incorporate them into the rough and ready West just wasn't to be found.
They did their job and at the end of the war were set free,to roam Arizona. This was done with many animals at all the early wars. If you go to the tomb there is a plaque that explains the whole story.
They really weren't a failure. They did their job but the Army just got tired of messing with them and turned them all loose in the desert.
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