In response to your e-mail, ". . . I think my Dad served with the above . . . discharge shows infantry MOS and Rhineland & Central Europe Campaigns . . . also shows "Company I, 353d Infantry" . . ."
I'm posting this for the benefit of others who may be interested in either or both the units indicated.
If 569th Antiaircraft Artillery (Automatic Weapons) Battalion is the unit indicated on his discharge, this means only that this is the unit he was assigned to – essentially, the official custodian of his records - while he was being processed out of service. May or may not have been the unit he served with overseas and probably wasn't.
Routinely, when a unit was scheduled to return to the U. S., "rookies" – newcomers - were transferred and replaced by "high points" men – individuals who had accumulated the requisite number of "points" to be eligible for rotation. An educated guess is that your Dad served with 353d Infantry but was transferred to 569th to rotate with the battalion.
353d Infantry was an element of 89th Infantry Division. The division's veterans association may be able to assist in determining his dates of service with the regiment and other info.
89th Infantry Division Society Post Office Box 489 Donnelly, Idaho 83615-0489