Ka kammala wannan magana: Shekaru biyu bayan haka, a ranar 22 ga Janairu, 1862, William H. Paul ya shiga aikin soja a lokacin Yaƙin Basasa a Philadelphia, Pennsylvania. Daga nan sai ya shiga aikin hukuma a sansanin McClellan a unguwar Nicetown-Tioga na Philadelphia a wannan rana a matsayin mai zaman kansa tare da Kamfanin E na 90th Pennsylvania Infantry. Bayanan soja a lokacin sun bayyana shi a matsayin dan shekaru 20 da ke zaune a Philadelphia wanda ya kai 5 <unk> 3-1/2 <unk> tare da gashi mai launin ruwan kasa, hazel idanu da haske mai haske. A ƙarshen Maris, bayan horo na asali, an tura shi tare da rundunarsa ta hanyar jirgin ƙasa zuwa Baltimore, Maryland, wanda aka sanya shi a Patterson Park Barracks, kuma an sanye shi da musket mai santsi mai santsi kafin a sake komawa, ta hanyar Washington, DC, zuwa Aquia Creek Landing, kuma an sanya shi tare da rundunarsa zuwa Brigade na 2, Rukunin 2 na Rundunar Sojojin Amurka ta 1 karkashin jagorancin Janar Irvin McDowell. An yi tafiya zuwa wurare daban-daban don tallafawa ayyukan Sojojin Tarayyar Turai na watanni masu zuwa, Bulus da 'yan uwansa 90th Pennsylvanians sun ga babban aikin su na farko a yakin Cedar Mountain, Virginia (9 ga Agusta, 1862) a lokacin bude yakin Arewacin Virginia. An umurce su da su hallaka gadar jirgin kasa a tashar Mitchell a ranar 15 ga watan Agusta, sai suka ci gaba da tsaron sojojin Union yayin da suka janye a fadin kogin Rappahannock, sa'an nan kuma suka ba da goyon baya ga batutuwan bindigogi na Union a lokacin yakin farko na Rappahannock Station (Agusta 22-25 Agusta) kafin su ci gaba da ayyukan da suka shafi yakin Thoroughfare Gap (Agusta 28). Bayan ya yi yaƙi a Yaƙin Bull Run na biyu (Agusta 28<unk>30) da
Yaƙin Chantilly (1 ga Satumba), an sake tura su zuwa Kamfen na Maryland a ƙarƙashin Manjo-Janar Joseph Hooker, sannan suka sake yin yaƙi a Yaƙin Kudancin Mountain (14 ga Satumba).