Rock-paper-scissors game (in modern warfare)

 Roughly, before the 16th century, armies using certain absolute tactics and weapons often occupied the strongest positions.  For example, knights originating from the Assyrian tank forces, the Greek and Roman lieutenant general infantry, the Huns' cavalry, and the Germanic heavy cavalry... The case of the Orient is not so different. It's just that we developed cavalry tactics a little earlier and the cavalry took the strongest position for a longer time... but after the Knights of the Bad States were sighted by the Longbowmen of Yeonggili in Azzancourt, some absolute power disappeared in track and field.This phenomenon seems to be solidified by cannons and hwaseungchongs developed afterwards, and one of the songs I learned at Sunday school a long time ago was this. "I'm a forward infantryman. It's a gunner. Horseback riding is a cavalryman...I think that's because the modern war, or the 16th to 19th centuries, had developed evenly among these three types of soldiers and soldiers, for example, the greatest cavalry in the Middle Ages no longer had the absolute power to feed infantry.As shown in Kagemusha, Japanese heavy-duty soldiers were completely destroyed by a squadron of farmers... The same was true of the West. I had to make a bold charge, but before I could reach the enemy camp, I broke into a long bow or crossbow... I haven't played at all since the spread of firearms and muskets. Are infantry absolutely strong? It wasn't. The infantry was the artillery's First, in order for infantry to create a powerful fire net at that time, they set up traditional dustproofs, fire in the front row in dense situations, and load in the back row... After the launch, the back row goes forward... It's powerful if you move forward like this... Isn't it a structure where the infantry coming in line with each other is just like a cannonball? That's why Napoleon, who excelled in artillery operations, won Europe... But what's unique is... The artillery was no match for the cavalry. In particular, the soldiers, who rushed quickly into irregular and loose formation in a large space, especially the spear cavalry, were the targets of fear. First of all, the artillery must be gathered together to sweep them. I have to move slowly to aim... In a space where a thousand infantrymen could walk for a minute (at least 30 or 40 men could be caught if a few shells had been dropped...), a cavalryman could have only one or two horses whizzing through in ten seconds...   It's hard to aim and it's hard to catch a few people even if you aim. So the cavalry was Bob to the infantry, and the infantry to the artillery, and again to the cavalry... That's why each country developed three departments evenly... The world is changing and the scale of the war is growing, and now artillery plays an old infantry role in destroying short-range enemies, and cavalry plays the role of armored cavalry, air force, air force, combat helicopter... Ground-to-ground missiles and air forces took over the role of artillery. Perhaps the war of the 21st century can be as powerful as the modern war, in which artillery, cavalry, and infantry have a powerful effect when harmonious. It is said that Korean artillery is powerful enough to fight the strongest in the world, but... The role of artillery is now only to play the role of infantry in the modern era of fighting on the front lines... It seems that the role of artillery in the old days to strike the enemy's last hearts is played by air force and ground/fleet missiles... In reality, our power is very weak... Isn't it too much to feel the anxiety of the 17th century army going to war with only cavalry and infantry reporters?