Re: 15th Iowa Order book info from National Archives - what did they have...
The Springfield 1861 was well known as the weapon to have even at the start of the war. Many of the early Iowa regiments were issued old conversions or foreign imports like the Austrian Lorenz musket at the start of the war so getting a Springfield was a sign to the them that they were going to see action not marching around.
Eugene Ware in his book "The Lyon Campaign" was in the 1st Iowa Infantry and fought at Wilson's Creek in August 1861. By a mishap during a waterbreak on the march he ends up with an 1861 Springfield when a regular soldier, who was the rightful owner, grabbed Ware's his old 1829 conversion musket by mistake. Pvt. Ware was very excited about this misfortune and went on and on about it and how jealous his messmates were later.
Honoring: Pvt. Albert R. Cumpston (Company B, 12th Illinois Vol. Infantry- wounded February 15, 1862)
Pvt. William H. Cumpston (Company B, 12th Illinois Vol. Infantry-Killed February 15, 1862 Ft. Donelson)
Pvt. Simon Sams (Co. C, 18th Iowa Infantry-Killed January 8, 1863 Springfield, MO)
"...in the hottest of the fight, some of the rebs yelled out...them must be Iowa boys". Charles O. Musser 29th Iowa Infantry