 Although American casualties in Operation Lüttich were significantly lighter than in previous operations , certain sectors of the front , notably the positions held by the 30th Division around Mortain , took severe casualties . By the end of 7 August alone , nearly 1 @,@ 000 men of the 30th Division had been killed . Estimates for American casualties from 6 – 13 August vary from 2 @,@ 000 @-@ 3 @,@ 000 fatalities , with an unknown number of wounded . 
