Went to playtest my newest Empire Earth civ, Poland, who had faved faster and cheaper cavalry, cheaper Field Artillery/Anti-Tank Guns, OP priests and faster civilians.
At the beginning I created a Priest and sent him to harass Kingdoms of Italy base, snatching civvies before they put up an University. But I already had a pack of infantry, musket cavalry and some cannons, so I attacked it... and hoo boy, we crushed the Kingdoms of Italy in the early Renaissance! By that time I had enormous economical base at home, and it was time to put up it to proper use, spamming military buildings and unit upgrades, making the cavalry proper melee/ranged beasts, the former being bullet sponges.
After I had 12 Stables, 4 Barracks and 4 Siege Workshops, I was churning out medics, cavalrymen and artillery all the time. The two next enemies, Russians and England, were crushed by the time of Industrial Revolution, the Polish Cavalry Hordes led by Napoleon.
But that was the moment where I discovered that the Ottoman Empire, who quietly kept to its corner, managed to outpace me and went into World War I era (first 25 years of 20th Century), so they began churning Tanks and even constructed an Airfield... so we swarmed into OE's base before I re-filled my horde after the latest double-smackings.
My poor Dragoons and Cavalrymen (ranged and sword cavalry respectively) were dying rather fast to Gotha Bombers and anti-personnel tanks, even with Manfred von Richthoffen's morale boost, so I had to make some AT cannons, and just sent the rallying points at the outskirts of the Ottoman city.
The constant onslaught and stream of Polish units lasted 30 minutes but I produced too much cavalry too fast for the Ottoman tanks to counter it in the meanwhile my Partisans (weaker infantry but able to shoot airborne things) began to dent the Gotha Bombers and managed to down few as they went to refuel at the airfield, and by then the Polish Cavalry Charge hit the core of Ottoman empire, cutting down their military buildings and civilian workers, and 2:30 hrs into the game, the Poland, without the backing of modern tanks and airplanes, won.