Charli: As regards Washington, i would never purport that he was militarily brilliant, but i would contend that he was competent, and had a good eye for terrain.
Washington's strength, however, lay in his leadership. At Turtle Creek in 1755, the regulars paniced and began firing in all directions. They fired into the gloom beneath the trees, and in the process killed and wounded several members of the Virginia militia who had moved out smartly to take the French and Indians in flank, being familiar with the style of warfare. They fired into one another. Washington had his coat clipped by musket balls four times, and his hat at least once (i believe more, but can't recall exactly). His first mount was killed beneath him. He had been terribly ill for weeks with "the flux," a vague term which refers to a dysentric camp disease of unknown origin. Nevertheless, recognizing the importance of the day, he had mounted that day to ride with Braddock and his staff officers. Braddock was wounded, and very likely by one of his own men (i don't purport that it was intentional), and was to die three days later of his wounds.
Washington took command of the situation. He got the English officers to stop the firing, despite having no rank in their army, he got the Virginians to fall back and form on either side of the column, and to close ranks behind the retreating regulars, forming a rear guard which the French prudently decided not to attack. While still on the march, he got the column reorganized, and re-established the routine which makes soldiers once more of a disorganized mob. When Braddock died, he had him buried at the east end of the camp, and then marched the column over the grave, so that it would not be identified by Indians, who would then have dug up the remains and desecrated them. This meant a lot to the regulars, and their gratitude to Washington was remarked upon by their officers at the time in private correspondence. (When the National Road was being built from Washington to St. Louis in the 1820's, workmen dug up remains in western Maryland which were then surmised to be those of General Braddock--his final resting place had remained undisturbed.)
When the Forbes expedition set out to finish the job Braddock had started, Washington went along as the commander of the Virginia militia. At one point, as the march proceeded beyond Great Meadows, at dusk in the forest, something paniced one of the militiamen, and the Pennsylvania and Virginia militia began to fire upon one another. Washington rode between the columns, knocking up the barrels of men's muskets and shouting for them to cease fire. The simple act was enough to stop the shooting.
In the bleak winter of 1776, when all looked like failure and loss, Washington convinced a sufficient number of Continentals and militiamen to remain beyond their stated terms so as to enable him to carry out his brilliant New Jersey campaign. It was not brilliant in the sense of subtlety of tactical doctrine, but simply for the exploitation of surprise at Trenton, and a rapid march to gain surprise and local superiority of force at Princeton. At Princeton, Macon's Virginians fired upon a column of English regulars marching down the road toward Trenton, where Cornwallis thought he had Washington trapped. They immediately formed and advanced on the Americans. The American front line was just organizing--Pennsylvania militia and Continental Marines under Cadwallader's command. They paniced and began to run. Macon, in trying to rally them, was struck down by a musket ball. Washington rode up, steadied the Virginians and stopped the flight of the Pennsylvanians and Marines. He then rode out in the the grape arbors before the American lines, and shouted to the men that there was nothing to fear. The English began to fire at him furiously, but he seemed to have been charmed all his life, and no musket balls touched him. The Americans rallied, broke the English line, and mauled another English regiment marching to the west out of Princeton.
There are many more examples i could provide, but let that suffice. The final act of crucial leadership which he provided was at the end of the war, when there was no fighting, and the army was close to disintegrating. An ineffective Congress and an ungrateful public were, as they had throughout the war, doing nothing to see that the army was paid and fed. There were mutinies, and on one occassion, the Maryland line marched in a body, armed, from the camp. They were among the best of the Continentals, and it was a very close thing when the Pennsylvania line faced them down and got them to march back to the camp. The officers of the Continental Army then took up the cause. They ought to have known better. Washington's army in the field posed a very real threat to Clinton if he tried to leave New York. An anonymous circular called upon the officers of the Army to meet at Newburgh. Washington went to head off what was nothing less than a mutiny by the command structure, and could very well have cost the United States all the fruits of the bitter toil and bloodshed of the eight previous years.
Here you will find the text of the message he read to his officers. Washington was not the amiable rube he is so often portrayed as being. He spoke for a few minutes off the cuff, in a plain and emotional manner, and then said that he would read a statement he had prepared. He then fumbled about in his coat for a pair of spectacles, shyly saying: "I have not only grown gray in my country's service, but am growing blind as well." The effect was all that any modern politician could have hoped. By the time he was done, there was not a dry eye in the house, and the officers silently returned to their duties.
His final act as commander took place when he rode from New York, where the Army had been mustered out, to Annapolis, where the Congress was in session. On December 23, 1783, he appeared before Congress and surrendered to them the commission which had been given him in 1775. He then rode home to private life. I know of no other successful military leader in history, who stood, as it were, sword in hand, at the head of a victorious army, with the full confidence of his people, who laid down that sword and surrendered to the will of the people, in Congress assembled. This unprecedented act as much as any other event in the Revolution, assured that the United States would survive and prosper.
Few military men in history can match the leadership of Washington. I doubt that any have ever commanded the confidence and respect of their people as he deservedly did.