R.E:

if your grandfather John Garbacz, who was born 08 JUN 1918 michigen lived in? Does he fought in the American army during the Second World War?
whether he had a brother and sister?

Yes he did fight in the war i think war world II i think he has a brither but yea he has a sister named linda my aunt linda. his 2 daughters Debra Stafiej and Sherry harb im debra stafiejs daughter she is married has 3 kids does this help? i think we have the same guy!