up until one o'clock at night. McCausland, moving in front
on this day, drove a body of the enemy's cavalry before him,
and had quite a brisk engagement at Rockville, where he
encamped after defeating and driving off the enemy.
We moved at daylight on the 11th; McCausland moving on the Georgetown pike, while the infantry, preceeded by Imboden's cavalry under Colonel Smith, turned to the left at Rockville, so as to reach the 7th street pike which runs by Silver Spring into Washington. Jackson's cavalry moved on the left flank. The previous day had been very warm, and the roads were exceedingly dusty, as there had been no rain for several weeks. The heat during the night had been very oppressive, and but little rest had been obtained. This day was an exceedingly hot one, and there was no air stirring. While marching, the men were enveloped in a suffocating cloud of dust, and many of them fell by the way from exhaustion. Our progress was therefore very much impeded, but I pushed on as rapidly as possible, hoping to get into the fortifications around Washington before they could be manned. Smith drove a small body of cavalry before him into the works on the 7th street pike, and dismounted his men and deployed them as skirmishers. I rode ahead of the infantry, and arrived in sight of Fort Stevens on this road a short time after noon, when I discovered that the works were but feebly manned.
Rodes, whose division was in front, was immediately ordered to bring it into line as rapidly as possible, throw out skirmishers, and move into the works if he could. My whole column was then moving by flank, which was the only practicable mode of marching on the road we were on, and before Rodes' division could be brought up, we saw a cloud of dust in the rear of the works towards Washington, and soon a column of the enemy filed into them on the right and left, and skirmishers were thrown out in front, while an artillery fire was opened on us from a number of batteries. This defeated our hopes of getting possession of the works by surprise, and it became necessary to reconnoitre.
Rode's skirmishers were thrown to the front, driving those of
