edit: A captain in the foreign legion gets transferred to a desert outpost.
On arrival he spots a mangy old camel. He said to the sergeant "What is the camel for"
The sergeant said "Well sir, We're a good distance from anywhere, and the men do have sexual urges. When they do, we have the camel."
The captain said "Well if it's good for the men's morale, it's good enough for me."
After a couple of weeks the captain becomes a little frustrated himself, and tells the sergeant to bring the camel.
The camel is brought to his quarters, he gets a foot stool and begins to have vigorous sex with the camel. When he had finished he said to the sergeant "Is that how the enlisted men do it"
The sergeant said "Well no sir. They usually ride it to the Brothel in town."