Mannasse served in the Union Army as a wagoner. He was mustered into service on August 27, 1862, as private with the 143rd Regiment of the Pennsylvania Infantry, Company C, (also known as the Wyoming Artillerists) and was mustered out on June 22, 1865.
His regiment fought in the battles of Chancellorsville, Virginia in May 1863, and Gettysburg, Pennsylvania in July 1863. Later that year, they performed railroad guard duty at Manassas, and stayed in Virginia for most of the rest of their tour of duty. In 1864, they fought in the Wilderness Campaign and the first general assaults on Petersburg, aided in the construction of Fort Hell, and assisted in destroying part of the Weldon railroad. In 1865, they were engaged at Dabney's Mill, and then left Virginia when they were detailed for special duty at the camp of rendezvous on Hart's Island, New York harbor.
Mannasse was born in Hollenback Township, the second of seven children. He married Anna Engler on March 23, 1867, in White Haven, Luzerne County, Pennsylvania, and the ceremony was performed by Rev. James M. Salmon. The couple had four children: Clara, Stella, Harry, and Ella. He was a farmer, and also worked as a blacksmith.
Mannasse served in the Union Army as a wagoner. He was mustered into service on August 27, 1862, as private with the 143rd Regiment of the Pennsylvania Infantry, Company C, (also known as the Wyoming Artillerists) and was mustered out on June 22, 1865.
His regiment fought in the battles of Chancellorsville, Virginia in May 1863, and Gettysburg, Pennsylvania in July 1863. Later that year, they performed railroad guard duty at Manassas, and stayed in Virginia for most of the rest of their tour of duty. In 1864, they fought in the Wilderness Campaign and the first general assaults on Petersburg, aided in the construction of Fort Hell, and assisted in destroying part of the Weldon railroad. In 1865, they were engaged at Dabney's Mill, and then left Virginia when they were detailed for special duty at the camp of rendezvous on Hart's Island, New York harbor.
Mannasse was born in Hollenback Township, the second of seven children. He married Anna Engler on March 23, 1867, in White Haven, Luzerne County, Pennsylvania, and the ceremony was performed by Rev. James M. Salmon. The couple had four children: Clara, Stella, Harry, and Ella. He was a farmer, and also worked as a blacksmith.