Monument at Poelkapelle. The best that I can make of the inscription is:

"SUR CE COIN DE TERRE BELGE RAVAGE PAR LA GUERRE TOMBA POUR LA DEFENSE DU DRIOT VIOLÉ UN HEROS FRANCAIS - GEORGES GUYNEMER. DONT LES AILES VICTORIEUSES CONQUIRENT A VINGT ANS UNE GLOIRE INCOMPARABLE DANS LE CIEL DES COMBATS. LES AVIATEURS BELGE QUI EURENT L'HONNEUR DE LUTTER A SES COTES ELEVE CE MONUMENT EN TEMOIGNAGE DE LEUR ADMIRATION NEE DE LA FRATERNITE DES ARMES". (I apologise for any missing accents).

My French is good enough to get a general sense of what this is about, but not good enough for a literal translation, so Google translate gives "ON THIS CORNER OF BELGIAN EARTH RAVAGED BY WAR FELL FOR THE DEFENSE OF VIOLATED RIGHTS A FRENCH HERO - GEORGES GUYNEMER. WHOSE VICTORIOUS WINGS CONQUERED AT TWENTY AN INCOMPARABLE GLORY IN THE SKY OF COMBAT. THE BELGIAN AVIATORS WHO HAD THE HONOR TO FIGHT AT HIS SIDE RAISE THIS MONUMENT AS A TESTIMONY OF THEIR ADMIRATION BORN FROM THE FRATERNITY OF ARMS"