The 4th Texas Infantry Regiment was not a unit in WW2. The divisions and regiments were not associated with a State in the name of the unit.
Instead, the 4th Texas Infantry Regiment fought in the American Civil War (1861-1865) on the side of the Confederates States. It was made up of men from Texas. I think it served in General Hood's Texas Brigade that fought with distinction in Virginia.
The address of the Twenty-Fourth Iowa Volunteer Infantry Regiment is: 2406 18Th St SW, Cedar Rapids, IA 52404-3329
15th Infantry regiment, 3rd Infantry Division (US Army) and 36th Infantry Division (Texas National Guard)
Fiji Infantry Regiment was created in 1920.
Bangladesh Infantry Regiment was created in 2001.
Vijayabahu Infantry Regiment was created in 1988.
Mechanized Infantry Regiment was created in 2007.
Singapore Infantry Regiment was created in 1957.
Mechanised Infantry Regiment was created in 1979.
The motto of Mechanised Infantry Regiment is 'Valour & Faith'.
Canadian Regiment of Fencible Infantry was created in 1803.
Mechanized Infantry Regiment's motto is '- Forward with vigor and determination'.
The 39th Regiment Illinois Volunteer Infantry.