Tuhia he tomokanga mō tēnei wāhanga - Ko tētahi wāhanga o te Sickles' Excelsior Brigade, ko te 72nd New York i whai wāhi ki te nuinga o ngā pakanga tino nui o te pakanga. I kawea ki Washington, DC, i whakauruhia nga mema o tenei reimana ki te wehenga o te Potomac (Sickles' Brigade), ka tohaina ki te tiaki i te taone nui i mua i te whakauru ki te haerenga a te ope taua o te Uniana ki raro o Maryland (Hepetema 15  Oketopa 2, 1861). I tukuna ano ratou hei Sickles 'Brigade ki te US Army o te Potomac i te Oketopa hei waahanga o te wehenga i whakahaua e Brigadier-General Joseph Hooker. I tae mai to ratou whakatinanatanga nui e whai ake nei hei waahanga o te Tuatoru o te Ope Taua o Amerika, Tuarua o te Rōpū i te wa i uru atu ai ratou ki te whakaekenga a te Ope o te Uniana ki Manassas, Virginia (10 Poutu-te-rangi 1862), te haerenga mai i Dumfries ki Fredericksburg, te hopu i nga toa (18 Poutu-te-rangi), me te tirotiro mai i Liverpool Point ki Stafford Court House me nga mahi i muri mai (4 Paenga-whawha). I whakawhiwhia ki te pakanga o te Peninsula, ka uru atu ki te Siege o Yorktown, Virginia (Paenga-whāwhā 5-4 Mei 1862), a he nui nga mate i te Pakanga o Williamsburg (5 Mei). I te mutunga o taua pakanga, tata ki te 200 nga mema o te puhi i mate, i whara ranei, he nui o te mate kaore e pa ki te puhi mo te toenga o te pakanga. I muri mai i uru ki te &lt;a href="Battle%20of%20Seven%20Pines"&gt; Battle of Seven Pines/Fair Oaks&lt;/a&gt; (Mei 31<unk>Hune 1), ka whawhai te ope i nga Whawhai e whitu nga ra i Oak Grove (Hune 25), te Peach Orchard me te Savage's Station
(Hune 29), White Oak Swamp me Glendale (Hune 30), me Malvern Hill (Hōngongoi 1 me Akuhata 5). I nekehia mai i te Peninsula i te ngahuru o te tau 1862, i kaha te mahi a te roopu i roto i nga Mahi Manassas Station a te Uniana (Akuhata 25<unk>27) me te Pakanga Tuarua o Bull Run (Akuhata 28<unk>30).