- serving to complete or put the finishing touches to a phase of a particular action.
- serving to complete a military campaign by killing or capturing any remaining enemy troops: a mopping-up operation.
Origin of mopping-up
1905–10; mop up + -ing1, used attributively
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mopping-up
These were handled by the mopping-up troops, who threw hand-grenades.Our Army at the Front
Most of the black platoons, he observed, had participated mainly in mopping-up operations or combat against a disorganized enemy.Integration of the Armed Forces, 1940-1965
Morris J. MacGregor, Jr.
Very good work was also done by the mopping-up platoon of D Company, under Sergt.The Sherwood Foresters in the Great War 1914 - 1919
Captain W. C. C. Weetman
The fifth wave is a mopping-up party to clear the enemy's dugouts.Military Instructors Manual
James P. Cole and Oliver Schoonmaker