The son of a grocer and a homemaker, John Sebastian Linz was born in Baltimore and raised in Highlandtown.
After graduating in 1941 from Mount St. Joseph High School in Irvington, he began studies at the Johns Hopkins University.
Mr. Linz left Hopkins to enlist in the Army and served with the 99th Infantry Division in Europe. He fought at the Battle of the Bulge, where he was wounded and earned a Purple Heart.
After being discharged at war's end, Mr. Linz earned a bachelor's degree in engineering from the University of Maryland, College Park.
The longtime resident of Phoenix in Baltimore worked as a logistical engineer at Martin Marietta Corp. and the Westinghouse Aerospace Division in Linthicum, from which he retired in 1979.
As a young man, Mr. Linz had played for the Baltimore Rockets, a semipro team of the American Soccer League. He was also a member of the Old-Timers Soccer Association of Maryland.
Mr. Linz was an active member of the 99th Infantry Division Association and attended the organization's reunions. He enjoyed traveling and reading.
His wife of 61 years, the former Gloria Bishop, a retired Baltimore County public school educator, died in 2011.
Mr. Linz was a communicant of St. John the Evangelist Roman Catholic Church, 13305 Long Green Pike, Hydes, where a Mass of Christian burial will be celebrated at noon Saturday.
Mr. Linz is survived by four daughters, Pamela Lang of Forest Hill, Debra Gurney of Sparks, Jacqueline Holland of Annandale, N.J., and Lisa Linz of Stephens City, Va.; a brother, William Linz of Towson; six sisters, Sister Mary Xavier and Sister Theresa Mary, both of Rodgers Forge, Claire Bevans of Parkville, Marge Robinson of Bowie, Joan Linz and Tess Wood, both of Timonium; 12 grandchildren; and three great-grandchildren. Another daughter, Laura Linz, died in 1962.