depends on the type of infantry? and when if ww2 then would. be ranger's were often though of as early special forces they were trained by British commando's. but one thing to think about is the equipment they have is a big factor with any infantry unit
3rd infantry division.
15th Infantry regiment, 3rd Infantry Division (US Army) and 36th Infantry Division (Texas National Guard)
Of the list that you have provide, the marine corps infantry is the best.
Army, 82nd Infantry Division.
Not in WW2. Before 1939, each US Army Infantry Division had 4 infantry regiments. This proved to be too large for use on the battlefield. So the size the division was reduced and one regiment was removed. So the 3rd Infantry Regiment could have been part of a Division before then. However, during WW2 the 3rd Infantry Regiment was not part of an infantry division. Source: http://www.custermen.com/ItalyWW2/ArmyOrg/OrgChart/Divisions.htm
In WWII it belonged to the 26th Yankee Division. Part of the 3 rd Army.
Omaha beach was seized by the US 1st Infantry Division along with the 116th Infantry Brigade Team (29th Infantry Division) and the 16th Infantry Brigade Team (1st Infantry Division). US Army Rangers also took part in the invasion force.
You need to be more specific about whether you're referring to the 7th Infantry Division, or the 7th Infantry Regiment before this question can be answered.
8th Infantry Division
The 82nd Airborne Division was a paratrooper division and therefore it was smaller than the typical Infantry Division. A paratrooper division were authorized to have about 9,000 men in its organization whereas an Infantry Division had 15,000 men. An airborne division had 9 companies in each of the three regiments whereas the infantry division had 12 companies in each of its regiments.
The order of battle of invasion troops for OLYMPIC/MAJESTIC were 14 Divisions: 10 Army Infantry, 1 Airborne and 3 USMC equal 450,000 combat and support troops staged at Okinawa.United States U.S. Sixth Army Yakushima and Koshikijima Islands - 40th Infantry Division (22,000 men)Tanegashima - 158th Infantry Regiment (7,600 men)Miyazaki - U.S. I Corps (95,000 men): 25th Infantry Division, 33d Infantry Division, 41st Infantry DivisionAriake - U.S. XI Corps (113,000 men): 1st Cavalry Division, 43d Infantry Division, Americal Division, 112th Cavalry RegimentKushikino - U.S. V Amphib Corps (99,000 men): 2nd Marine Div., 3d Marine Division, 5th Marine Division6th Army reserves - U.S. IX Corps (79,000 men): 77th Infantry Division, 81st Infantry Division, 98th Infantry Division;11th Airborne Division (15,000 men)
Who is Tank Gunner Scot Steven Jack 3Rd infantry division USA Army, USA Iraq
I can't find any reference to this unit currently being in existence. The 302nd Infantry Regiment was subordinate to the 94th Infantry Division (US Army Reserve), which has since been deactivated and reformed as the 94th Division (Force Sustainment).