3. In the beginning of June, General Robert Patterson marched against Harper's Ferry. On the 11th of the month a division commanded by Colonel Lewis Wallace made a successful onset upon the Confederates at Romney. Patterson then crossed the Potomac and pressed back the Confederate forces to Winchester. Thus far there had been only petty engagements and skirmishes. The time had now come for the first great battle of the war. [Sidenote: First Battle of Bull Run.] 4. The main body of the Confederates, under General Beauregard, was concentrated at Manassas Junction, twenty-seven miles west of Alexandria. Another large force, commanded by General Joseph E. Johnston, was in the Shenandoah Valley. The Union army at Alexandria was commanded by General Irwin McDowell, while General Patterson was stationed in front of Johnston. On the 16th of July the national army moved forward, and on the morning of the 21st came upon the Confederate army between Bull Run and Manassas Junction. A general battle ensued, continuing with great severity until noonday. In the crisis of the conflict General Johnston arrived with nearly six thousand fresh troops from the Shenandoah Valley; and in a short time McDowell's army was hurled back in rout and confusion into the defenses of Washington. The Union loss in killed, wounded, and prisoners amounted to two thousand nine hundred and fifty-two; that of the Confederates to two thousand and fifty. 5. Meanwhile, on the 20th of July, the new Confederate government was organized at Richmond. Jefferson Davis, the President, was a man of wide experience in the affairs of state, and considerable reputation as a soldier. He had served in both houses of the national Congress, and as a member of Pierce's cabinet. His decision of character and advocacy of State rights had made him a natural leader of the South. [Sidenote: Operations in Missouri.] 6. The next military movements were made in Missouri. A convention, called by Governor Jackson in the previous March, had refused to pass an ordinance of secession. But the disunionists were numerous and powerful; and the State became a battlefield. Both Federal and Confederate camps were organized. By capturing the United States arsenal at Liberty, the Confederates obtained a supply of arms and ammunition. 7. They hurried up troops, also, from Arkansas and Texas in order to secure the lead mines in the southwest part of the State. On the 17th of June Lyon defeated Governor Jackson at Booneville, and on the 5th of July the Unionists, led by Colonel Franz Sigel, were again successful in a fight at Carthage. On the 10th of August a hard battle was fought at Wilson's Creek, near Springfield. General Lyon made a daring attack on the Confederates under Generals McCulloch and Price. The Federals at first gained the field, but General Lyon was killed, and his men retreated.