In early May, the Germans changed tactics and made local attacks and counter-attacks, which gave the French an opportunity to begin an attack against Fort Douaumont, which was partially occupied, until a German counter-attack reoccupied the fort and took numerous prisoners.
The Germans changed tactics. This was in early May. The Germans made local attacks and counter-attacks. This was in early May. Local attacks and counter-attacks gave the French an opportunity to begin an attack against Fort Douaumont, until a German counter-attack reoccupied the fort and took numerous prisoners. Fort Douaumont was partially occupied.