They are well-trained, and have nearly limitless funding. The Regular Army is generally what the world currently has, armed services from around the world that are controlled and managed under government control.

Their goal varied, from terrorizing nations to launching coups to overthrow existing governments and setting up new ones. They have vast sums of money and technology to use on their war machines and recruit their troops. They were formed up by many rebellious groups around the world, including militants, rebels, and terrorists. The Rebellion Army existed well before the Metal Slug game takes place. The original story of the Metal Slug series begins in the early 21st century, where two factions, the government-led Regular Army and the Rebellion Army clash with each other to achieve their goals. Armed forces from many countries, and other organizations around the World, also fought in this horrible war.

These wars were fought mainly between the Regular Army and the Rebel Army. It took the name of Modern Wars because it was the first important war that took place in the Modern Age. It was the most bloody conflict since the 2nd World War. The Modern Wars were an armed conflict that take place from 2028 to 2032.

World war toons metal slug