Joe, it really depends on the units in the west, I have seen union rifles, Ballard Rifles, Maynards, and mid to late war late war sharps carbines issued to western federal units. Early war, most were armed with revolvers, primarily the Remington New Army 44 revolvers. I will research the surrender, I have a lot of sources saved that i need to find and check. There was book written, now out of print by the federal commander, he signed about 200 names per hour on the paroles at Jacksonport, You may want to check the Arkansas State University Jonesboro Library and Jackson County Library if they have a copy. I don't remember the Federal units who surrendered at Jacksonport. Most of the confederates who surrendered at Jacksonport, were units from Northeast and North Central Arkansas, and were on Price's Raid. I don't remember the title of the book by Mobley, about the war in northeast Arkansas and Batesville Jacksonport. The Batesville Civil War Roundtable may still have editions of Mobley's book. that book also had information as to federal units operating in area at time of surrender. I know shortly after that white units in Arkansas, started being disbanded, and the USCT. many of them units prior to the USCT designation had to reenlist, so because of the March 1864 reorganizations, put the brunt of the army of Occupation duties to the USCT, I know in August 1865 the 60th USCT replaced the 3rd Minnesota at Jacksonport, If I remember correctly it was early June 1865, I believe the 5th. that the surrender took place at Jacksonport, and at another location.