1st Lieutenant, U.S.Army, Pilot, Royal Air Force (Attached), Air Service, American Expeditionary Force. Date of Action: August 13, 1918. Citation: The Distinguished Service Cross is presented to Allan F. Bonnalie, First Lieutenant, U.S. Army, for extraordinary heroism in action near Bruges, Belgium. On August 13, 1918, First Lieutenant Bonnalie led two other machines on a long photographic reconnaissance. In spite of the presence of numerous enemy aircraft, they were able to take all the photographs required, but were attacked by six Fokker biplanes. During the combat Lieutenant Bonnalie saw that one of his accompanying machines was in difficulty and that an enemy airplane was nearly on its tail. He at once broke off combat with the enemy with whom he was engaged and dived to the assistance of the machine in trouble. He drove off the enemy plane, regardless of the bullets whih were ripping up his own machine. Eventually however his tail planes and his elevator wires were shot away and his machine began to fall in side slips Lieutenant Bonnalie managed to keep his machine facing toward the British lines by means of the rudder control, while his observer and the third machine drove off the enemy aircraft, which was still attacking. In its damaged condition Lieutenant Bonnalie's machine was tail heavy, and he therefore had his observer leave his cockpit and lie out along the cowl in front of the pilot. In this manner, he re-crossed the British trenches at a low altitude and righted his machine sufficiently to avoid a fatal crash. Had it not been for the gallantry of Lieutenant Bonnalie the injured machine to whose assistance he went would have fallen into enemy territory as (the)pilot had been wounded and its observer killed Leutenant Bonnalie's own machine was riddled with bullets and it was a marvelous performance to bring it safely to the ground. General Orders No. 99. W.D., 19