retreating foe in France. _(U. S. Official Photos.)_]


[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