On Market-Garden:

Any number of factors led to this attempt that fell short including: victory disease on the part of the allies, the airborne's fears that they would be held out of combat with no chance to show their mettle again, weakened logistics (port capacity/re-opening had not caught up yet), and Monty's rivalry with Patton.

Patton's tactics were pretty simple. Go hard and fast, pin strongpoints with infantry and artillery fire, flow around and keep moving with everyone else. Not particulary novel -- that was stosstroopen 101 from the 1918 effort by the 2R -- but they were effective.

Grant gets a lot of grief for his tactics, but a closer look at his campaigns and writings do not show him endlessly repeating Marye's Heights until the Rebs ran out of bullets. He did make a few mistakes -- Cold Harbor for example -- but was not as much of a butcher as some would make him out to be. He WAS a lot more willing to accept casualties than was Little Mac, and the Army of the Potomac never really grew to like him as it did their founder McClellan. Greatest U.S. general? Nope. He wasn't a Burnside or a Fredendall either though.