Noun
Ground combat soldiers who are not mechanized, and whose role is to harass the enemy in front of the main body of infantry.
(slang, archaic) Bedbugs or fleas.
Source: en.wiktionary.orgI was called up in 1942. Having been born in Berlin, schooled in Devon, London and Berkshire, and lived in Suffolk, I ended up in the Highland Light Infantry. Clement Freud
Putnam would go on to serve under General Anthony “Mad Anthony” Wayne in the Corps of Light Infantry after the capture of Stony Point. Source: Internet
Light infantry and missile troops took part in the battle, but their role was of a lower importance. Source: Internet