Moller also was present at Prague, Olomouc and Zorndorf. There, at Zorndorf, Moller's artillery was a key to the battle plan. Frederick's plan of attack was first to hammer the Russian right with heavy artillery fire and then to launch Heinrich von Manteuffel's advanced guard against it. Expecting cavalry, the Russians formed in a square, the best way to receive an mounted attack but the worst way to receive an artillery barrage. Moller opened fire with 60 total of his 18- and 24-pounders, placed in two locations around Zorndorf; the initial range was too far, so they closed about 600 paces, and then ripped the Russian squares apart. Russian sources reported that one particular cannon shot killed or wounded 48 grenadiers. Despite this accuracy, Moller's contribution at Zorndorf could not be measured in a single stroke, but in his ability to move his horse artillery around the battlefield. At 1:00 pm, they were in one place, firing canister into tightly-packed Russian formations; at 4:00 pm, they were another place, pounding the Russian line; at 7:00, they were elsewhere, preventing a Russian counter-attack.