We will now turn our attention to a brilliant engagement which occurred simultaneously with the fall of Vicksburg. The town of Helena, in Arkansas, had been garrisoned by a small force under General Prentiss, a gallant officer, who had been captured at Pittsburg Landing with a large portion of his division, after bravely contending for more than half a day with a foe quadruple his own force. THE BATTLE AT HELENA, ARKANSAS. JULY 4, 1863. The town of Helena, in Arkansas, is situated upon the northern bank of the Mississippi river, and lies upon flat ground. Not more than a quarter of a mile from the river the city and its approaches are commanded by high ridges, between which are ravines opening toward the river. The city had been strongly fortified by batteries placed upon these hills and connected in line by rifle-pits. An attack upon Helena had been anticipated for some days, and at four o’clock on the morning of the 4th of July, the attack was opened upon General Prentiss by a rebel force numbering fifteen thousand, under Generals Holmes and Price. The Union forces, who had been two nights under arms and waiting the attack, were in readiness in a few minutes, and infantry, cavalry, and artillery were immediately in the positions assigned them. Between the ridges and the river the low, flat ground was protected by cavalry and rifle-pits and flanking batteries of ten-pounder Parrotts, and six and twelve-pounder brass pieces. Making the city the base of operations, Battery A was placed upon the right, and Batteries B, C, and D, upon the left. The enemy attacked upon the left of the line, and were opposed by a strong force of cavalry, with a brigade of infantry and four pieces of artillery. Presently it was reported that a large force was assaulting Battery A; and close upon the heels of this intelligence came the news that sharpshooters were harassing batteries C and D; behind the sharpshooters came heavy columns of the enemy who were rapidly moving artillery into position. In front of Battery B could be seen a large force of cavalry, showing that the enemy had been disposed by the planning of a master mind. The enemy opened a spirited fire on both flanks of General Prentiss’ troops at once, but without producing any effect; evidently no great result was expected by the rebels in regard to this movement, and it was merely intended as a diversion while they were throwing their whole strength against the Union centre. This plan would, if successfully carried out, have given them possession of Fort Curtis, a point which was centrally located, and commanded all the ridges surrounding the city. But the rebels were not aware of the presence at the city’s landing of the gunboat Tyler, commanded by Lieutenant James M. Pritchett, and they were equally astonished and disconcerted when, at a critical moment, the Tyler made them aware of her presence. The enemy were unable to open