Prussia lost ~12,000 men; Russia lost ~18,000. These were staggering numbers for the era.
~36,000 men. Frederick utilized his "Oblique Order" and relied on the world’s finest cavalry under General von Seydlitz. Zorndorf 1758: Frederick faces Holy Mother Russia
By 1758, Prussia was fighting for its survival. While Frederick was occupied in the south against Austria, the Russian army under General William Fermor had invaded East Prussia and moved deep into the Neumark region. Prussia lost ~12,000 men; Russia lost ~18,000
The Russians reached the Oder River, threatening the Prussian heartland and Berlin. Prussia lost ~12
Prussian infantry attacked through a murderous Russian artillery barrage. The Russian line held with fanatical bravery.