In 1864, General Ulysees S. Grant began the "final campaign" against Richmond using a war of attrition. That's because of the Union's 2-to-1 numerical advantage against a qualitatively superior Confederate force (better led and fighting on home ground). In a series of battles (Wilderness, Spotsylvania, Cold Harbor), Grant advanced about 60 miles in one month, at the cost of about 60,000 men, roughly a 2-to-1 loss ratio (compared to about 30,000 for the Confederates.)
When these tactics earned him the sobriquet of "Butcher Grant," his retort was, "I'll fight it out along these lines if it takes all summer."
Once his proximity to Richmond reduced the Confederates' capacity for maneuver, the Union loss ratio went down to 3- to -2, and ultimately, 1-to -l, spelling doom for the outnumbered Confederates.
Does Ulysses S. Grant deserve a high reputation as a general for using such "attrition" tactics?