Whakaotihia te rerenga e whai ake nei: I whakauruhia a Sanderson hei Pirihimana i te 15th U.S. Infantry i te Oketopa 24, 1861. Ko tana papa a John P. Sanderson he koroneela o tenei rerenga e mahi ana mai i te Mei 14, 1861 tae noa ki te Hurae 4, 1863. I whakawhiwhia ia ki te Tuarua Tuarua i te Oketopa 31, 1861. I whakawhiwhia ki a ia he tiwhikete hei 1st Lieutenant i te Paenga-whāwhā 7, 1862, mo te mahi toa me te mahi nui i roto i te
Te Pakanga o Hiroha, Tennessee. I whakatairangahia ia ki te 1st Lieutenant i te ope taua i te Whiringa-a-rangi 9, 1862. I whakawhiwhia a Sanderson ki tetahi tohu tuarua hei rangatira i te Mahuru 1, 1864, mo te mahi toa me te mahi nui i te pakanga o Atlanta.