Whakaotihia te rerenga e whai ake nei: Na tana kooti hoia, kaore i taea e Riker te arahi i tana reimana i te wa o te whakaekenga o Manassas i te timatanga o Poutu-te-rangi 1862, engari i taea e ia te arahi i ana tangata i muri mai i taua marama ano ki Fortress Monroe, me te toenga o te ope taua o Potomac, hei waahanga o te McClellan's Peninsula Campaign. I ārahi a Riker i tana rārangi ki te whawhai i te Pakanga o Williamsburg me te
Te Pakanga o Fair Oaks i Mei 1862.