Tuhia he haere tonu mo tenei waahanga - Te mahi a te Signal Corps i te Pakanga Paniora-American o 1898 me te Whakatupuranga o Philippines i muri mai
i runga i te tauine nui atu i te reira i roto i te Pakanga Civil. Hei taapiri ki te tohu tirohanga, tae atu ki te heliograph, i whakawhiwhia e te ope nga waea waea me nga waea waea waea me nga korero taura, i whakatairanga i te whakamahi waea i te pakanga, i whakamahi i te whakaahua whawhai, i whakahou i te whakamahinga o nga peera. I muri tata mai i te pakanga, i hangaia e te Signal Corps te Washington-Alaska Military Cable and Telegraph System (WAMCATS), e mohiotia ana ko te Alaska Communications System (ACS), e whakauru ana i te waea ahokore tuatahi i te Hauauru o te Hauauru.