To surpass in marching; to march further or faster than.(verb)
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Use "outmarch" in a sentence
"But so long as the army could outmarch the Union infantry, Sheridan could not do great mischief."
"He could outswear the Sergeants, outmarch the Rifles and outfight any man in green or scarlet."
"The attack on the village was supposed to do no more than pin down the British rearguard while the French left, safe in the knowledge that their foes had already marched, were now eagerly trying to outmarch them."