Whakaotihia te rerenga e whai ake nei: I uru atu ia ki te ope taua o te Uniana hei tangata takitahi i roto i te Kamupene E o te 49th New York Volunteer Infantry i te marama o Hune, 1861, ka eke ki te rangatira. I te taha o te ope taua o Potomac i uru tana roopu ki nga pakanga i uru atu ki Young's Mill, Yorktown, Williamsburg, Mechanicsville,
Fair Oaks, Gaines's Mill, Savage's Station, Malvern Hill, Tuarua Bull Run, Maunga ki te Tonga, Antietam, Fredericksburg, Williamsport, Gettysburg, Mine Run, Wilderness, Cold Harbor, Petersburg me etahi atu. I mauheretia a Walsh i roto i nga mahi ki te Welden Railroad i mua tata atu i te paunga o tana wa whakauru, a he herehere ia i Belle Isle, Libby Prison, Andersonville, Savannah, Castle Pinckney me Florence Stockade, i mua i te whakawhiti me te hoki ki Annapolis, Indiana, i reira i tukuna ai ia i te Mei 5, 1865. I etahi wa i muri mai i tenei, e waru nga tau i mahi ia i te "Wisconsin State Journal" i Madison.