For educational purposes here are some comparative casualty numbers for the US Army assault regiments on 6th June. These are taken from Balikowskis books UTAH Beach & OMAHA Beach. The author spent considerable time analyzing the original US Army documents from 6th, 7th, & 8th June, and the work of other on this subject. Below is a abridged version of his best estimates of the losses to midnight 6th June.
UTAH Beach vs air delivery:
....................Killed...WIA.....MIA
8th Inf Reg.....29......110.......0..........This was the lead assault regiment
12th Inf.........10........39.......0
22d Inf.........13........34.......4
29th Artillery..39........22.......0
359 inf...........1...........1......0.........90th ID landed late 6th June
20 Cav Grp....2..........18......0
Engineers......32........150....0.........Components of 237, 297, 298, 299 engineer battalions & 1 Special Engineer Brigade
87 Mtr Bn......2............3.....0..........107mm Chemical Mortar Bn
70th Armor....19.........19.....0
746 Armor......4...........4......0
65th Artillery..2..........22......0........Armored Artillery Battalion
US & Royal Navy.........................235 total casualties
IX Bomb Cmd.30........0......0.......A20 & B26 Bombers that attacked half hour before landing
IX Troop Car...27.......28.....0.......C47 crews that carried Airborne
82 AB Div.................................1259 total
101AB Div.................................1240 total
So, it cost a bit over 940 casualties to get four infantry regiments, two tank battalions, a armored artillery bn, a oversized engineer brigade, & Miscl across the beach.
To fly in four parachute, two glider regiments six pack howitzer bns (?) cost over 2400 casualties
For comparison on OMAHA Beach
1 Inf Div....107.....740.....417......Total 1346......This includes 88 men lost but not differentiated by the 32 FA Bn, 1 Med Bn, & 26th Regiment
29 ID........321.....710.....231......Total 1272......This includes 10 undifferentiated losses from a MP platoon.
Supporting Engineer (9bn), Armor (3bn), AAA (3bn) Mtr bn, Signal bn, Eng Brigades (2), Ranger (2bn)..... Total 1568
Naval Total 539
8th AF 10 Killed One B24 crashed enroute over Britain.
So, getting six inf regiments, three armor bn, nine Combat Engineer Battalions across the beach cost a total of 4720 casualties.
In terms of men landed 34,000+ men crossed OMAHA Beach by midnight 6th June. The total US airborne op landed under 20,000 by the same time.