[Illustration: The United States battleship Pennsylvania, showing an unusual view of some of her heavy guns. This vessel is the pride of the Navy and was selected to escort President Wilson on his voyage to Europe to attend the Peace Conference. She led the way across the Atlantic, steaming ahead of the George Washington, on which the President and his party of 200 were passengers. She carries twelve 14-inch and twenty-two 5-inch guns.] [Illustration: _Above_--American observation balloon being brought down to its anchorage. One of many similar balloons used to direct the fire of artillery and observe the movements of the enemy, a service of considerable danger as the balloonists are constantly exposed to airplane attack. Each observer is harnessed to a parachute and jumps when the balloon is attacked and in danger of destruction. (_Copyright by C. P. I., from W. N. U_.) _Below_--Canadian officers of a Royal Air Squadron, lined up with their machines behind the front in France. It was the splendid work of these gallant fellows and thousands more like them--British, French, and Americans--that kept the supremacy of the air in the hands of the Allies. _(Canadian Official Photo, copyright by U. & U_.)] [Illustration: _Above_--Remarkable photograph of a flame-throwing attack by French troops. The "flammenwerfer" or flame-thrower was originated by the Germans, like other diabolical methods of warfare. The Allies perfected the machine and turned it on the enemy with great success, and the Germans did not like their own medicine. Note the reservoir on the soldier's back. _(Copyright. U. & U._) _Below_--A Belgian scouting party in Flanders, making its way over a pontoon bridge, and dressed in the new khaki uniform of the Belgian army, which turned the tables on the Hun. _(Photo, U. & U._)] [Illustration: Part of the American army of occupation on its way to Germany. After celebrating for awhile the announcement that the armistice had been signed, the American troops at the front realized that there was still serious work, though of a different kind, ahead of them, and started for the cities across the Rhine with a firm determination to carry on till all the fruits of their victory were obtained. An American dispatch rider is seen at the right, fraternizing with a French soldier. _(French Official Photo, from U. & U._)] [Illustration: GENERAL JOHN J. PERSHING, Commander American Expeditionary Forces in France, in August, 1918, had an army of 1,500,000 Americans in France, doing glorious service with their allies against the common enemy. His selection for command was approved by all Americans; he is the idol of his men. _(Copyright, U. & U._)] [Illustration: A divisional headquarters on the British front in France during the progress of a battle, showing troops in reserve, German prisoners, and stretcher-bearers at work. (Australian official photograph)]