Australian soldiers,wearing gas masks,in battle near the western front at Ypres,Belgium,during World War I. The first use of chemical warfare was on April 22 1915,when Germany released chlorine gas from cylinders at Ypres. The masks were simple respirators with a charcoal absorbent | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Photo Researchers |
Bildgröße: | 2550 px × 2834 px |
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