History: A junior officer and a soldier from an unidentified Feldartillerie regiment wearing combined acoustic/optical locating equipment, Germany, 1917. [1200x908]

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEDkrFDNknG0ydqYdPGy76ZkgVRzNwRu_DdhoqwIcCtjXdLT1MUC8k6bHENoTTJ9JdWsvgYUdzDtlujTTiQjXkVnHNeMx0AppTb5OOlNtBchcdMU5qyzDQlAx09yeYKnL0-RgaabWfv-z0/s1600/acoustic_locator_13.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/arqrpg/a_junior_officer_and_a_soldier_from_an/?utm_source=ifttt