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.” 
References / notes
- Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.141-142.
Glossary of terms and customs
This page forms part of our glossary of words and phrases of the Armed Forces of the United Kingdom of Great Britain during the Great War, which also includes: technicalities, trench slang, expressions in everyday use, nicknames, sobriquets, the titles and origins of British and Commonwealth Regiments, and warfare in general. Please feel free to help expand and improve this content.
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