Erraum. — Prussia has been entirely occupied with the reviews at Dusseldorf,
which have been attended by more than a hundred foreign officers, including Lord Clyde, General Eyre, and other Englishmen. All officers deputed by their Governments to observe the manoeuvres have been maintained by the King, at his own expense. A military correspondent of the Times describes the dress and drill of the regiments as admirable, and they move at a quick step, about eight paces per minute quicker than English infantry. The cavalry are well mounted, but the artillery is ill supplied with horses and deficient in drivers, and there are only four supplied of breech-loading guns, not equal to the Armstrong- The infantry are armed with breech-loading rifles, good for 800 yards. The general opinion seems to be that the formation of the regiments is too close, and the movements are too slow for this day of acmes de precision.