Answer:
When the shelling died down, the Allied defenders waited for the first wave of German attack troops but instead were thrown into a panic when chlorine gas wafted across noman’s land and down into their trenches. .The Germans targeted four miles of the front with the wind-blown poison gas and decimated two divisions of French and Algerian colonial troops. by May they had retreated to the town of Ypres
Step-by-step explanation: