Leap-frogging was a familiar term during the First World War for a form of attack that was introduced in 1917 for “penetrating deeply into the German fortified trench system. Successive lines of objectives, or limits of attack, were appointed to successive "waves" or attack formations of infantry. On the first wave capturing was the allotted objective, while it consolidated the position, the second passed through beyond it, or "leap-frogged" forward to capture the second objective ahead, and then in turn the third wave passed forward in like manner, following up the artillery barrage as it "lifted" and cleared the way for each advancing wave.” 
- Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.141-142.
Glossary of words and phrases[edit source]
The above term is listed in our glossary of words and phrases of the Armed Forces of Great Britain during the Great War. Included are trench slang, service terms, expressions in everyday use, nicknames, the titles and origins of British and Commonwealth Regiments, and warfare in general. These words and phrases are contemporary to the war, which is reflected in the language used. They have been transcribed from three primary sources (see Contents). Feel free to expand upon and improve this content.
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