Ramba uchiverenga ndima ino - Basa reSignal Corps muHondo yeSpain neAmerica ya1898 uye Kumukira kwePhilippine kwakazotevera
kwakanga kuri pamwero mukuru zvikuru kupfuura zvazvakanga zvakaita muHondo Yenyika Yose. Mukuwedzera kune zviratidzo zvekuona, kusanganisira heliograph, iyo corps yakapa nhare uye telegraph waya mitsara uye kutaurirana kwetambo, yakakurudzira kushandiswa kwemafoni muhondo, yakashandiswa muhondo yekutora mifananidzo, uye yakagadziridza kushandiswa kwemabhaluni. Nguva pfupi hondo yapera, Signal Corps yakavaka Washington-Alaska Military Cable and Telegraph System (WAMCATS), inozivikanwawo seAlaska Communications System (ACS), ichiunza teregirafu yekutanga isina waya muWestern Hemisphere.