What did Allied airborne divisions do months before the invasion and why?

Months before the D-Day invasion of Normandy on June 6, 1944, Allied airborne divisions conducted extensive training and planning to prepare for their critical role in the operation. They undertook reconnaissance missions, gathered intelligence on German defenses, and practiced parachuting techniques to ensure readiness. The goal was to secure key objectives behind enemy lines, disrupt German communications and reinforcements, and create confusion before the main amphibious assault, thereby increasing the chances of a successful invasion. This strategic preemptive action aimed to weaken enemy resistance and facilitate the Allied landings on the beaches of Normandy.