During the morning Crittenden and Major John Mendenhall had collected whatever artillery they found onto Dyer Ridge. At various times they had the 6th Ohio Battery, 8th Indiana Battery, 3rd Wisconsin Battery, 26th Pennsylvania Battery, 7th Indiana Battery, Battery C of the 1st Illinois, Battery D of the 1st Michigan (also referred to as the 4th Michigan Battery) and Battery H of the 4th US. Some of these batteries arrived at Dyer Ridge just minutes before the break through happened while some had been there most of the morning.
A total of 44 cannon in eight batteries were on Dyer Ridge at one time or another (it being nearly impossible to determine exactly when batteries arrived and left during those hectic minutes after the breakthrough). The cannon that were on the ridge included 10 pound Parrots, 6 pound smooth bores, 12 pound howitzers, 6 pound James rifles, 12 pound Napoleons and 3 inch rifles. An exact count of cannon is nearly impossible because Battery D of the 1st Michigan had previously lost two of its six guns and Captain J.W. Church did not list what was lost when, only that he was only able to escape with a 12 pound howitzer.
Of those eight batteries they lost 23 guns during the breakthrough; the entire army lost 36 guns during the two days of battle. The 6th Ohio Battery was the only battery to go unscathed while the 8th Indiana Battery lost all 6 of its guns, the 3rd Wisconsin Battery lost 5 of 6, the 26th Pennsylvania Battery lost 4 of 6, the 7th Indiana Battery lost 1 of 6, Battery C of the 1st Illinois lost 3 of 6, Battery D of the 1st Michigan lost 3 of 4 (after having previously lost 2) and Battery H of the 4th US lost 1 of 4.
At first glance it would seem easy to compare the fields of fire at Dyer Field to other battlefields where artillery was put to good use. One could compare the numbers of guns, the time the artillery had used to prepare their position and the amount of open ground. This would not actually be too beneficial because there are too many other variables, such as the quality of the troops on either side, the availability of support and the topography of the open ground. Some attacks against artillery had long distances to travel over relatively flat surfaces (Cemetery Ridge at Gettysburg) while other attacks were much shorter but over more severe terrain (Missionary Ridge). We also would not know how long the Dyer Ridge defenses would have had to prepare as it is impossible to say how long Wood might have held Longstreet back. The numbers of guns could be compared but because there are too many other contributing factors this is a moot point.