A docile horse wears a gas mask, as a precaution against gas attacks, that was developed by "Our Dumb Friends League," a humane society in London, England, March 27, 1940. The mask might almost be a feed bag, except for the window panes and the enclosed ear muffs. (AP Photo) 

 

Oglala war party. Several Oglala men, many wearing war bonnets, on horseback riding down hill. Photo by Edward S. Curtis, 1907. 

 

U.S. Adviser Lt. Col. Burr M. Willey of Ayer, Mass., fired his rifle as he moved up Route 13 with a South Vietnamese army unit toward An Loc, besieged provincial capital north of Saigon. In this scene in Vietnam, May 19, 1972, Willey was followed by his faithful dog Moose and South Vietnamese troops. On June 19, the colonel and his dog were killed during a rocket attack in the area along Route 13. (AP Photo/Nick Ut) 

 

Using every available means of transportation to the front lines on Saipan, Mariana Islands, these U.S. Marines loaded an ox cart but had to use a lot of persuasion and a little teamwork to get the ox in motion. AP Photo 

 

A Marine Corps dog handler comforts his German shepherd while the dog is X-rayed after being shot by a Japanese sniper on Bougainville, The dog died of its injuries. National Archives via the National World War II Museum 

 

British trooper W. Williamson rescues a puppy from the ruins of a shell-damaged house in Geilenkirchen, Germany, in November 1944. (AP Photo) 

 

Marine Cpl. Gunner Schmitt, 23, from Janesville, Wis., and a puppy that the Marines had named Willie, both take an afternoon nap on the porch of an office building in an abandoned industrial complex where the Camp Pendleton 3rd Battalion, 1st Marines, have been living for the past five days in Baghdad, Wednesday, April 16, 2003. The puppy belongs to the population of stray dogs that also live in the complex. (AP Photo/North County Times/Hayne Palmour) 

 

6th U.S. Cavalry honoring Count Waldersee on his arrival--between Chien-men and Ta-ching-men Gates--Peking, China. Photo by Underwood & Underwood., 1901. 

 

An American advised patrol plods through the Vietnamese jungle on June 27, 1964. Supplies and some of its personnel aboard the powerful, plodding elephants which are a form of native transport dating back centuries to Hannibal during the First Punic War.(AP Photo/Horst Faas) 

 

Lt. George A. Custer with dog. Photograph from the main eastern theater of war, the Peninsular Campaign, May-August 1862. Selected Civil War photographs, 1861-1865 (Library of Congress) 

 

This is a British military mission which has been in Abyssinia for 6 months, shown March 12, 1941. This is how they trekked 4,500 miles of jungle, in heart of Italian-controlled Abyssinia. (AP Photo) 

 

A herd of cattle is driven along a Paris street on route to a slaughter house to be butchered in order to help relieve the food shortage caused by the guerrilla fighting in the French capital (AP Photo/Peter Carroll) 

 

A camel leers over the wreckage left on the El Alamein battleground, May 18, 1950, where one of the crucial struggles of World War II was fought. Only a few pockets of wreckage now remain to mark the scene. Some 300 square miles of desert are still mined. Thousands of Italian and German dead of the battle still lie unburied, lost in the shifting sands. (AP Photo) 

 

CAVALRY REVIEW BY PRESIDENT WILSON. CAVALRY IN MANEUVERS 1913. 

 

Taking Grain to the elevator during World War I. Undated photo. (AP Photo) 

 

Mexican infantrymen swing past in their first review near Mexico City June 18, 1942 by President Manuel Avila Camacho (center foreground) since Mexico declared war on the Axis. (AP Photo) 

 

In this photo release by the National Archives via National World War II Museum, Butch, a sentry dog, stands guard over Pfc. Rez P. Hester of the Marine Corps’ 7th War Dog Platoon on Iwo Jima in this undated photograph from the National Archives. The photo will be part of an exhibit, titled "Loyal Force: Animals at War" at the National World War II Museum in New Orleans from July 22-Oct. 17. (AP Photo/National Archives via National World War II Museum) 

 

Uncle Sam's war dog sentries have seen their first overseas duty in Puerto Rico Jan. 13, 1943. 'Adrian' the police dog sentry can't wait to leave his portable Kennel. With him left to right, are Private Louis Robbins, dog trainer of Long Island City, Pfc. Juan Gotos of Puerto Rico, and Pvt. Carlos Rodriguez, also of Puerto Rico. (AP Photo) 

 

Brule Indians, many wearing war bonnets, on horseback. Photo by Edward S. Curtis, December 26, 1907 

 

Practice charge of the 8th Gun Cavalry during the punitive expedition in Mexico 1916. 

 

Mountain troops testing the relative merits of the mule and the jeep. Slowly but surely the mules plod their five-mile-per-hour pace up the mountain. They are more surefooted than the horse and follow the lead animal willingly. 1942 Farm Security Administration - Office of War Information Photograph Collection (Library of Congress) 

 

Private First Class Norman Diamond of Brooklyn, New York gives a congratulatory pat to "Staff Sergeant Basic" and "Private First Class Adler," who have just received promotions under authority of DL (Dog Land) regulation 0000-900. They are mascots of a U.S. Signal Service company somewhere in India. 1942 Farm Security Administration - Office of War Information Photograph Collection (Library of Congress) 

 

Squadron of soldiers of the ErtuÄŸrul Cavalry Regiment of the Imperial Guard Photo by Abdullah Frères, Constantinople. 

 

Dead horse on battlefield, Gettysburg, Pennsylvania photographed 1863. Civil War Photograph Collection Library of Congress Prints and Photographs Division. 

 

Equipment for the trenches. Date Created between 1914 and 1918, A French sergeant and a dog, both wearing gas masks, on their way to the front line. Photo by National Photo Company Collection. 

 

Mules about to be loaded on ship. for Cuban Invasion, Tampa Florida Photo By Strohmeyer & Wyman 1898. 

 

This undated photo provided by the National Archives via the National World War II Museum shows a U.S. sailor as he has his picture taken with a monkey in Bermuda during World War II. The photo will be used in a movie about off-duty encounters with exotic animals in an exhibit titled "Loyal Force: Animals at War" at the National World War II Museum in New Orleans from July 22-Oct. 17. (AP Photo/National Archives via the National World War II Museum) 

 

Sudeten refugees arrive in Prague, Oct. 9, 1938, typical of the continuous stream of people fleeing from the occupied zones. (AP Photo) 

 

Horse-drawn German artillery thunders through a burning Polish village as a cow, abandoned by fleeing Poles, placidly watches, Sept. 1939. (AP Photo) 

 

A police officer and his dog stand guard by seized marijuana at the Baja California state police headquarters in Tijuana, Mexico, Monday Nov. 1, 2010. According to state police, 12,976 kilograms (28,606 pounds) of marijuana were seized and one person arrested in an operation early Monday. (AP Photo/Guillermo Arias) 

 

Army forge scene, in front of Petersburg Aug 1864. A group of military personnel preparing to shoe a horse in the camp's temporary blacksmith shop. Photo by David Knox 

 

An undated handout photo, released to the media on Friday, March 27, 2009, shows War rescue dog Rip rescuing a trapped victim from a bombed building in Poplar, London, U.K. Rip, a stray dog who became a World War II hero after being found homeless and starving in a bombing raid in London, will be remembered at an auction next month. Source: Spink auction house via Bloomberg News EDITOR'S NOTE: NO SALES. 

 

New York troops in Corbie, France, celebrate the signing of the Armistice Treaty, Nov. 11, 1918. (AP Photo) 

 

A caravan comes from the sand hills in the desert near Mogador, French Morocco, where Vichy radio reported a new American landing, Nov. 9, 1942. (AP Photo) 

 

Bystanders render the Nazi salute as German cavalry troops on horseback enter Lodz, Poland, Sept. 9, 1939 . (AP Photo) 

 

Title: The old Genoese Castle at Balaklava, from above the castle pier Other Title: Genoese fort at the entrance to Balaclava Harbour Creator(s): Fenton, Roger, 1819-1869, photographer Date Created/Published: [1855] Medium: 1 photographic print : salted paper ; 29 x 37 cm. Summary: View of ships in Balaklava harbor and hill with castle or fort ruins, conical tents, buildings, and animals. Part of: Fenton, Roger, 1819-1869. Roger Fenton Crimean War photograph collection Roger Fenton, photographer of the Crimean War: His photographs and his letters from the Crimea, with an essay on his life and work / Helmut and Alison Gernsheim. London : Secker & Warburg, 1954, no. 19. 

 

Gen. John J. Pershing is shown on horseback in front of his summer home and general headquarters at Chaumont, Haute-Marne, France, 1918. (AP Photo) 

 

Cavalry of Gen. Gomez' army, Remedios, Cuba. Group of armed soldiers on horseback, one carrying Cuban flag, on a palm covered plain. Photo Strohmeyer & Wyman, 1899. 

 

A well camouflaged Marine is giving silent instructions to a Marine Corps jungle-trained dog on the front lines of the beachhead in Bougainville, Soloman Islands, on Jan. 13, 1944 during World War II. Dogs donated by citizens proved invaluable in locating Japanese snipers. (AP Photo) 

 

American air-borne troops use horse and carriage to transport themselves in pursuit of Axis Forces in Sicily, Italy, on July 29, 1943 during World War II. The number of prisoners of war increases daily in the Allied invasion of Sicily, which began July 10. (AP Photo/British Official Photo) 

 

5th U.S. Cavalry, Porto Rico. Creator: Keystone View Company., Meadville, Pa. c1900. Four U.S. soldiers behind horses lying on ground. One of the soldiers is blowing a bugle and holding a pistol, and the other three are holding rifles. 

 

A horseback rider of the Red Army cavalry, clad in heavy winter gear, is seen as he passes a German tank abandoned by the retreating German invaders, at an unknown location along the German-Russian front, on February 22, 1942. (AP Photo)

 

German soldiers let their horses drink from a stream somewhere along the German-Russian front, on November 25, 1941, during the German invasion of the Soviet Union. (AP Photo) 

 

Picture taken 24 June 2005 shows, one of the nine African rats, sniffing out a landmine in Chimoio, Mozambique. Twelve years after the end of a brutal civil war, Mozambique is still dealing with a "critical situation" from landmines in areas where more than one million people live. Apopo, a Belgian de-mining research group train rats and there handlers, saying that the animals have a highly developped sense of smell, are easy to tame and train and cheap and easy to maintian. AFP PHOTO / Alexander JOE (Photo credit should read ALEXANDER JOE/AFP/Getty Images) 

 

During World War I Swiss cavalry patrolling the frontier Dec. 24 1917. 

 

German artillery troops are seen on August 22, 1940, as they enter the Belgian town of Antwerp, during the invasion of the Low Countries in World War II. (AP Photo) 

 

German troops are seen as they march into Brugge, Belgium, on May 6, 1940, during the invasion of the Low Countries in World War II. (AP Photo) 

 

Civil War militia, Photograph showing soldiers, many on horseback, and a cannon with two attendants on each side. Library of Congress Prints and Photographs Division Washington 

 

 

This undated photo provided by the National Archives via the National World War II Museum shows a U.S. soldier and local children as they ride an elephant in Burma during World War II. This photograph from the National World War II Museum in New Orleans will be part of a movie shown as part of an exhibit there, titled "Loyal Force: Animals at War," from July 22-Oct. 17. (AP Photo/National Archives via the National World War II Museum) 

 

This undated photo provided by the National Archives via the National World War II Museum shows a German soldier posing with his horse during World War II. It will be part of an exhibit, titled "Loyal Forces: The Animals of WWII" at the National World War II Museum in New Orleans from July 22-Oct. 17. Early in the war, the German Army had a calvary division: throughout the war it used horses for reconnaissance and to transport much of its ammunition and other supplies. (AP Photo/National World War II Museum) 

 

The heroic defenders of the Polish capital of Warsaw, shown Sept. 1939, led by a mounted officer, march to surrender to the Germans who besieged them for three weeks after the rest of the nation had been beaten into submission. (AP Photo) 

 

** CORRECTS AGE OF DOG AND SPELLING OF DICKIN MEDAL ** Treo, an eight-year-old black Labrador from the Military Working Dogs, who is to be presented Wednesday with Britain's Dickin medal, awarded for bravery and commitment in wartime, the highest military honor an animal can expect, poses with the medal at the Imperial War Museum in London, Wednesday, Feb. 24, 2010. Treo is being decorated for his work sniffing out explosives in Afghanistan. (AP Photo/Sang Tan) 

 

Marshal Josip Broz Tito, leader of the united Yugoslav Partisan Armed Forces to fight the German invaders and their Croatian Fascist allies, is seen posing with his dog, at an unknown location, in June 1944. (AP Photo) 

 

The Halt by T.H. O'Sullivan taken May 1864 is a Photograph showing Captain Harry Page, quartermaster at Headquarters of the Army of the Potomac, his horse, and another man at rest, after locating a spot for camp. 

 

U.S. crew members of the 514th Squadron, 376th Bomb Group, 9th Air Force are shown on camels in Egypt, with the Giza Pyramids and Sphinx in background, during their service in North Africa in March 1943. Two of the crew, 1st Lt. William H. Hatton, Pilot, left, and 2nd Lt. D.P. Hays, Navigator, right, disappeared with the B-24 bomber "Lady Be Good" in 1943 during its mission to Naples, Italy. The person at center is unidentified. (AP Photo) 

 

Kudabu, Chimpanzee mascot of the U.S. Engineers in Liberia, takes her siesta on a soldier's cot using his helmet as pillow. As in World War I this African republic has thrown in its lot with the Allies and the American Army Engineers have a task force operating in the country, Dec. 7, 1942. (AP Photo) 

 

German soldiers move a horse-drawn vehicle over a coduroy road while crossing a wetland area, in October 1941, near Salla on Kola Peninsula, a Soviet-occupied region in northeast Finland. (AP Photo) 

 

British sailors on horseback are seen patroling the streets of Kowloon City on Kowloon Peninsula, in October 1945, shortly after the British dependency Hong Kong was retaken by a task force of the British Pacific Fleet. The crown colony had been under Japanese occupation for almost four years. (AP Photo) 

 

Nearco, the highest priced racehorse ever sold (?65,000), has a bomb-proof shelter at this town near Newmarket, Cheveley, England on April 16, 1944. The shelter has air conditioning, electric lighting, and is roofed with 4 ft. of reinforced concrete surmounted by several feet of earth. Here, Nearco is shown being led out of his shelter. (AP Photo) 

 

Here's a sample of the terrain over which British and American forces of the Fifth army are fighting in Italy, Jan. 15, 1944. A mule pack train, its load delivered to the men at the front, winds its way down a steep trail homeward bound for another load. (AP Photo) 

 

A picture made available by Albany Associates shows a young girl from an Arab nomad tribe riding a donkey with jerrycans filled with water through the village of Regel El-Kubri, 20km west form El-Geneina, the State capital of West Darfur, on 16 March 2008. A rebel leader in Sudan's war-torn western region of Darfur, Khalil Ibrahim of the Justice and Equality Movement, called today for one-on-one peace talks with the Khartoum government under the mediation of former UN secretary general Kofi Annan. The group has refused to take part in African Union- and UN-sponsored peace talks aimed at ending five years of violence in Darfur where international groups say 200,000 people have died and 2.2 million been displacedAFP PHOTO/HO/STUART PRICE == RESTRICTED TO EDITORIAL USE == (Photo credit should read STUART PRICE/AFP/Getty Images) 

 

KRT WORLD NEWS STORY SLUGGED: CHECHNYA KRT PHOTOGRAPH BY YURI GRIPAS/KRT (KRT10 - February 18) A Grozny woman sits with her dog in front of her bombed out house in the Staro-Promislovsky district of Grozny, Chechnya, Russia February 17. Grozny, a city of nearly a half-million just over a decade ago, lies in ruins after fourmonths of Russian shelling. (KRT) AP PL BL KD 2000 (Vert) (kn) (Additional photos available on KRT Direct, KRT/PressLink or upon request) 

 

The casket of Marine Lt. Col. William G. Hall, who was killed in Iraq on March 30, 2008, arrives at graveside by horse drawn caisson at his funeral in Arlington National Cemetery on Wednesday, April 23, 2008. Lt. Col. Hall is the 419th soldier to be buried in Arlington from the war in Iraq. (AP Photo/ Washington Post, Gerald Martineau) **WASHINGTON TIMES OUT NEW YORK TIMES OUT USA TODAY OUT DC EXAMINER OUT NO SALES NO ARCHIVES NO MAGAZINES MANDATORY CREDIT ** 

 

Cambodian soldiers use carts pulled by oxen to carry their equipment and ammunition as they move toward Khmer Rogue where North Vietnamese and Viet Cong base camp is located, 40 miles northwest of Phnom Penh Nov. 2, 1972. The carts resemble those used by their ancestors in wars against the Chams, Thais and Vietnamese. (AP Photo) 

 

Three Crow men, seated in rocky area with low growing shrubs, their horses rest. Photo by Edward S. Curtis, 1905. 

 

An American advised patrol plods through the Vietnamese jungle on June 27, 1964. Supplies and some of its personnel aboard the powerful, plodding elephants which are a form of native transport dating back centuries to Hannibal during the First Punic War.(AP Photo/Horst Faas) 

 

A Russian man, an evacuee from the Chechen Capital Grozny, reaches out for a final pat of his dog, Jan. 21, 1995. Pets left behind as people flee the war-torn region are forced to fend for themselves. Some 200 people were evacuated from the Grozny area on Saturday, 21 by Russian forces with the Ministry of Emergency Situations. The majority of evacuated were ethnic Russian who had no place to flee during the fighting between Russian and Chechen forces. (AP Photo) 

 

A bird is seen at the American cemetery in Colleville-sur-Mer, Normandy, western France, on June 4, 2009 as take place the preparations of the ceremonies commemorating the 65th anniversary of the D-Day Allied landings on the beaches of Normandy. US President Barack Obama will meet his French counterpart Nicolas Sarkozy and attend a ceremony at a cliff-top US war cemetery. British Prime Minister Gordon Brown, Prince Charles and Canadian Prime Minister Stephen Harper will also attend the solemn commemoration at Colleville-sur-Mer, which overlooks the US landing zone dubbed, Omaha Beach. AFP PHOTO / JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)