The first 48 hours of a military landing are the most critical.
The installation of structures allowing special units, armored vehicules, tank and supplies to land on the beach requires time and incredible organization.
The presence of a large flooded area around the sector of UTAH BEACH increased the difficulty, because they formed a natural barrier slowing down the units progression.
Futhermore two well trained german sections were stationed within close proximity of UTAH BEACH :
91th Infantry Division
6th Parachute Regiment
Two american airborne divisions were dropped just behind the landing beach on june 6th 1944 from 0h15 onwards :
82nd Airborne Division - The "All American"
101st Airborne Division - The "Screaming Eagles" About 13.000 men.