Glowworms, emitting bioluminescence, were unlikely “war animals,†but nonetheless played a vital role on the battlefield and in the trenches. As they huddled in the dank, dark trenches, soldiers would collect glowworms by the thousands and store them in jars. They provided portable lights for officers to study intelligence reports and battle maps. Glowworms were also used by all the troops to read their comforting letters from home.
