Indeed. One-hundred years ago yesterday [21 March] so began Operation Michael. The German Spring Offensive of 1918. One million Germans troops their objective to knock the French and English out of the war or at the least create conditions favorable to the German during negotiations.
Thanks to You Tube see these outstanding videos dealing with the offensive, German tactics, the big-push-forward and frenzied operational concept that nearly succeeded. Also consider reasons for ultimate German failure of the Spring Offensive.
Sector taken! Blue Cross! Green Cross! Yellow Cross. Ground strafing aircraft.
Again, concentrate on reasons for: 1. German success. 2. Ultimate German failure. Go see it all. Good stuff!