"Our losses inevitably have been considerable, but they have not been out of proportion to the magnitude of the battle. Enemy's Losses Heavily From reports received from all parts of the battle front, the enemy's losses continue to be very heavy, and everywhere has been made at a great sacrifice. Our troops are fighting with the greatest gallantry. Exceptional gallantry was shown by the 24th division, a protracted defense at Levergüsler and by the Third division, who maintained our position in the neighborhood of Croisilles and to the north of that village against repeated attacks. A very gallant fight was made by the 51st division in the neighborhood of the Bapaume-Cambrai road against repeated attacks. Forty Divisions Employed Identification obtained in the course of the battle shows that the enemy's opening attack was delivered by some 40 divisions, supported by great masses of German artillery, reinforced by Austrian batteries. Many other German divisions since have taken part in the fighting, and others are arriving in the battle area. Further fighting of the most severe nature is anticipated. Aircraft Are Busy British aircraft during the fighting along the front in France Thursday aided materially the infantry forces below. The text of the British official communication follows: "The mist over the whole front Thursday morning cleared locally later, but in some places the weather was unsuitable for low flying. The enemy's attacking troops and reinforcements on the battle front offered excellent targets to the pilots of our low-flying machines, which poured many thousands of rounds into them, causing innumerable."  Cavities. 