Your dad's unit,260th Infantry Regiment, was one of three IRs in the 65th Infantry Division (259th, IR, 260th IR, 261st IR).
A brief history of the division:
Departed NY P/E 10 Jan 45; arrived at Le Havre,France 21 Jan 45; relieved the 26th IR 9 Mar 45, defending the Saarlautern Bridgehead from Orscholz to Wadgassen; the 260th IR captured Saalautern 19 Mar 45;
the division entered Germany 20 Mar 45;
it entered Austria 4 May 45; the 260th relieved at Linz,Austria 5 May 45, where it remained to garrison the town; the division closed on the Inns River 6 May 45, where it made initial contact with the Russian forces, near Strengberg on 8 May 45, as the war ended in Europe.
Division was located at Linz, ASustria, at war's end, 15 Aug 45.
Campaigns, 65th Infantry Division:
Rhineland,15 Sep 44 / 21 Mar 45 (*) Central Europe, 22 Mar 45/11 May 45. (* NOTE: This is the total time period of this campaign, and does not suggest that the division was actually on line during the entire period).
Entered combat 9 March 45; days in combat, 55.
Killed in Action 233 Wounded in Action 927 Died from Wounds 27. Casualty rate, approx. 16%.
XX Corps,1 Mar 45 VIII Corps, 4 Apr 45 XX Corps,17 Apr 45
M/G Stanley E. Rienhart, Aug 43/July 45.
1. WW II ORDER of BATTLE, Shelby L. Stanton, author, Galahad Books, NYNY, publisher. (History)
2. CITIZEN SOLDIERS, Stephen E. Ambrose, author, Simon & Schuster, NYNY, publisher. (Statistics)
Both books are excellent sources of military history.
I hope that this helps.
Please acknowledge, as I have had a lot of "down time" on my system.