Not exactly "shock and awe". I think it was Lord North who, in the Revolution said of America
"How can you conquer a map?"
Before the English reached Washington, they were opposed by several thousand Virginia and Maryland militia, a few hundred sailors and somewhat fewer than 200 Marines. The American records account for about 7,000 militiamen. The English claim there were 9,000 of them. Whichever number you accept, the militia behaved just as they almost always have in American history--they threw down the guns and ran away before the Brits had even fired a gun in anger. The English force was about 2000 Peninsular veterans. When the militia ran away, the sailors using muskets and artillery they wouldn't allow the militia to take with them, and the Marines, fought the English until the sun went down. The Marines then marched back to Washington, taking all of their dead and wounded with them. The English were full of praise for the American Navy and Marines. That battle enabled Dolly Madison to do her thing, and for the government to evacuate their archives and specie. The battle has long been accounted a shameful defeat by American historians, who apparently expected a few thousand unwilling, ill-equipped and untrained American militia to turn back thousands of Brit veterans who had fought the French in Spain for five years or more.
In fact, given that the real fight was between fewer than 500 sailors and Marines, and the 2,000 or so Brit infantry, the Americans did amazingly well. British commentators noted that the militia "ran like sheep chased by dogs," but that the sailors and Marines fought like demons, in the words of one officer's letter: "They continue to serve their guns even after we had shot down all of their officers and were among them with the bayonet."
Of course, the greater lesson is that burning down Washington does no long lasting material damage to the United States. It was kind of like invading Russia and burning Moscow.