A wounded German officer, found in the Egyptian desert during the first two days of a British offensive, is guarded by a sentry while awaiting backup, on November 13, 1942.

The shrapnel come from 5-inch AA shell fire from the ships under attack. Those shells that missed (damn near all of them) simply followed a ballistic arc and struck civilian areas miles away from Pearl Harbor. Most of the civilian carnage that Sunday was due to so-called “friendly fire”.

Remains of the Warsaw ghetto, which the German SS dynamited to the ground. The Warsaw Ghetto only existed for a few years, and in that time, some 300,000 Polish Jews lost their lives there.

A group of Hitler youth receive instructions for the use of a machine-gun, somewhere in Germany, on December 27, 1944.

Mothers testing the reactions of babies to a respirator designed to protect them against poison gas on March 3, 1939.

After an incendiary bombing, a view of some of the damage in Tokyo, Japan in 1945.

This combination of three photographs shows the reaction of a 16-year-old German soldier after returning home and finding out his family has died, and that his house has been destroyed.

A ten-year-old Polish girl named Kazimiera Mika mourns over her sister's body. She was killed by German machine-gun fire while picking potatoes in a field outside Warsaw, Poland, in September of 1939.

An American soldier, shot dead by a German sniper, clutches his rifle and hand grenade in March of 1945 in Coblenz, Germany.

Partly completed Heinkel He-162 fighter jets sit on the assembly line in the underground Junkers factory at Tarthun, Germany, in early April 1945.

A Russian survivor identifies a former camp guard who brutally beat prisoners on April 14, 1945, at the Buchenwald concentration camp.

Fee Perez inspects .30 caliber rifle and machine gun bullets at Remington Arms Company's Bridgeport, Connecticut, plant alongside a photo of her husband, Melburn, who is serving overseas.

Auschwitz gas chamber, This one makes me feel the deepest emotions, as each time I see the picture I feel them.

Soviet soldiers in camouflage winter uniforms line up along the roof of a house in Stalingrad, in January of 1943.

A German officer eats C-rations as he sits amid the ruins of Saarbrücken, a German city and stronghold along the Siegfried Line, in early spring of 1945.

June 1944, two boys overlooking the ruined remains of the village of St. Lo, France after the D-Day invasion of Normandy.

Anne Frank poses in 1941 in this photo made available by Anne Frank House in Amsterdam, Netherlands. In August of 1944, Anne, her family and others who were hiding from the occupying German Security forces, were all captured and shipped off to a series of prisons and concentration camps. Anne died from typhus at age 15 in Bergen-Belsen concentration camp, but her posthumously published diary has made her a symbol of all Jews killed in World War II

Thanks Robert Green, @Frank Roberts
Edit : I have added several new photos. Thanks all the up-voters.