November 20th.—To-day a grand review, the most remarkable feature of which was the able disposition made by General McDowell to march seventy infantry regiments, seventeen batteries, and seven cavalry regiments, into a very contracted space, from the adjoining camps. Of the display itself I wrote a long account, which is not worth repeating here. Among the 55,000 men present there were at least 20,000 Germans and 12,000 Irish.