National Geographic : 1918 Jan
VIEW OF A FRENCH ATTACK FROM AN OBSERVATION AIRPLANE WHOSE RADIOTELEGRAPHY ISDIRECTING THE SUPPORTING ARTILLERY FIRE: ONE OF THE MOST REMARKABLE AERIAL PHOTOGRAPHS OF THE WAR In the upper right-hand corner may be seen the French infantrymen taking advantage of theprotection offered byshell craters from enemy machine-gun fire. A little below may be seen the attackers in a trench. The white puffs of smoke indicate the activities of the French hand grenade "trench-cleaners," whose duty it is to bomb the German dugouts after a successfuladvance. The soldiers belonging tothe French infantry attacking corps wear white placards on their backs, so that they may be recognizedreadily byairmen whose duty itistokeep the artillerists posted so as to have the curtain of fire always a little in advance of their men.