Pedzisa mutsara unotevera: Mushure mokunge vabuda munzvimbo dzavo dzokuvanda munguva yechando mukutanga kwechirimo cha1864, Coyne nechikwata chake vakaendeswa ku2nd Brigade, 4th Division of the U.S. Army's II Corps kubva muna March kusvika muna May uye vakazopiwazve basa muna May ku4th Brigade, 3rd Division mukati meCorps iyoyo. Yakarairwa mabasa ane chekuita neLieutenant-General Ulysses S. Grant's Overland Campaign (Chivabvu 4 <unk> Chikumi 24, 1864), vakabva varwa muhondo dzeWilderness (Chivabvu 5 <unk> 7), Spotsylvania Court House (Chivabvu 8 <unk> 21), North Anna (Chivabvu 23 <unk> 26),
Totopotomoy Creek (May 28<unk>30), uye Cold Harbor (May 31 <unk> June 12), uye vakabatanidzwa muKukombwa kwePetersburg kubva munaJune 9 kusvika munaJune 22 apo hurumende yakaendeswa kudzokera kuNew York kuti iunganidze uye kugadzirisazve. Kunyange zvazvo nhamba ye70th New York infantrymen yakazounganidzwazve mu 86th New York Infantry, Coyne akaiswa mukuremekedzwa muNew York City musi waJuly 1, 1864.