Tuhia he tomokanga mo tenei whitianga - I muri i tana haere ki te kura me te ako ture i raro i a Cyrus Blanchard, i mahi tuatahi a Rawson hei tumuaki mo te kura a te iwi. I mutu tenei i te Pipiri o te tau 1862, i te Pakanga o Amerika, i te wa i uru ai ia ki te 118th New York Infantry Regiment. I mahi ia i raro i a Brigadier-General Isaac J. Wistar i Yorktown me te rangatira o te rangatira o W. F. Smith i Drury's Bluff
He aha? I whakapau ia i te wa nui e mahi ana hei Kaiwhakahaere Matua mo tana wehenga, i te tari tari ranei, i tetahi wa i te taha o te roopu nui o nga kaitohutohu i te tari o te Whare Hauora o te US Army i Point Lookout, Maryland. I mutu tana mahi hoia i te Pipiri 1865.