The army came to the river at Bottom's Bridge. The Eleventh Maine was in the advance. They were brave, hardy men, from the lumber-swamps of the Pine-Tree State. The Rebel pickets saw them, set the bridge on fire, and fled. The Maine men gave them a volley, rushed forward, used their caps for fire-buckets, and extinguished the flames, and with their axes soon had it repaired for the use of the army. Heintzelman's and Keyes's corps crossed to the southern bank, while the other corps pushed up the northern bank, towards Coal Harbor and Mechanicsville. THE AFFAIR AT HANOVER COURT-HOUSE. Fourteen miles north of Richmond is Hanover Court-House. A Rebel force was stationed there, commanded by General Branch. On the 27th of May, General Fitz-John Porter, with Emory's brigade of cavalry, and Martindale's, Butterfield's, McQuade's, and Warren's brigades of infantry, proceeded to drive the Rebels from the place, and make a junction with McDowell. At noon General Emory, with the cavalry, came upon the enemy about two miles east of the Court-House, where the road forks,--the right hand road leading to the Court-House, the left hand to Ashland. Berdan's sharpshooters and Martindale's brigade were near by, and General Porter formed in line of battle. The sharpshooters were thrown forward as skirmishers. Benson's battery came into position in a field on the right-hand side of the road, and commenced throwing shells over the heads of the sharpshooters. The Rebels were posted on a hill near a farm-house,--their line reaching across both roads. General Martindale went up the Ashland road, driving in the skirmishers. The soldiers heard the whistle of a locomotive, and saw a train of cars upon the Virginia Central road bringing reinforcements to the Rebels. Captain Griffin's batteries were brought up, and a vigorous fire opened upon the railroad. The Twenty-second Massachusetts and Second Maine were thrown forward to the railroad. They tore up the track, and cut the telegraph-wire, under cover of the heavy fire of the artillery.