Darwin E. Schaack, 92, of Waterloo, passed away Feb. 18, 2023, in Waterloo. The visitation will be from 4-8 p.m. on Friday, Feb. 24 at Quernheim Funeral Home in Waterloo and from 9 a.m. until the time of service on Saturday, Feb. 25 at St. Paul United Church of Christ in Waterloo. The funeral service will be held at 10 a.m. on Saturday, Feb. 25 at St. Paul United Church of Christ with Rev. Jeff McCarn officiating. Burial will be at Kolmer Memorial Cemetery in Waterloo.