The background of the colonial war can be traced back to increased tensions along the border of Mali colonies against Celtic and Norse colonies. The Mali Empire wanted more territory in North Brendania and as a result of Welsh colonies to the south they expanded northward. Meanwhile, the Little Ice Age was effecting the Celtics and the Norse colonies as many of their colonies had their temperatures fall and plant life and food destroyed. So the Celtic and Norse colonies expanded southward. The Celtic Union, Scandinavia, and Wales had earlier signed a pact forming the Colonial Alliance (CA), which formed free trade between the colonies and if one country's colonies were attacked the others would aid the one attacked. As a result of this the Mali colonies were surrounded by unfriendly colonies so they had a military enlargement so a lot of soldiers were in New Mali. This enlargement of soldiers made the CA colonies raise up their troop levels. Meanwhile, the Mali and Celtic and Norse colonies expanded enough to touch each other and a border could not be agreed on. All countries had soldiers patrolling at the edge of their colonies and often were near enemy patrols. The common border was the OTL New York State southern border. However, the territory of Long Island could not be agreed on. This so-called "Long Island Dispute" lasted a month. During the last week of the dispute had Mali delivering an ultimatum stating "All Celtic and Norse forces will leave Long Island by the end of the week, or it is war." The Celts and Norse did not leave so on August 11, 1330 the Colonial War began.
The War Begins
The first battle of the war was the Battle of Fort Union. Fort Union was a Celtic fort on Long Island and was the main headquarters for Celtic soldiers in Long Island. Long Island was split into three territories: Mali territory on the south-eastern side, Celtic territory on the south-western side, and the Norse territory on the northern side. When war began Mali soldiers attacked the fort with their soldiers from Long Island. Mali ships surrounded the Celtic side and boarded any incoming supply ships. Naval battles broke out between Mali and the Celtic Union and most resulted in draws. On land the Mali soldiers had overtaken most of the fort but fighting continued in the southwestern part. The Norse and the Welsh declared war on Mali as they part of the CPL and soon sent their navies to combat Mali. As a result of the declaration of war Mali soldiers crossed into the Norse territory on Long Island. The Norse could keep bringing soldiers and supplies as their ships could stop Mali attacks. Mali soldiers managed to win at Fort Union and continued westward in an attempt to push the Celtics off Long Island. The Celtics managed to bring more soldiers in and push Mali back. As a result Mali played a defensive war and built fortifications along the border with Norse territory and fortifications along Fort Union. Long Island remained on of the fiercest spots of the war.
When war broke out Mali also had soldiers cross the Delaware River. Celtic soldiers on the northern side of the river built trenches to stop the incoming Mali assault. As nobody had guns yet the Celts used arrows to stop the Mali soldiers who were running at them. The Mali soldiers could not break the trenches so the dug their own trenches on their side of the river. Both sides attempted to break through the trenches but none could do so. The fighting at the Delaware River also involved ships. Both sides used all kinds off ships that could fit in the river to fight each other. The Celtics had the advantage at naval warfare as the Norse lent them much of their ships. The Norse used their superior navy to their advantage by blocking Mali access to the Delaware Bay. Norse ships attacked any incoming Mali ships and let none pass. In order to not let Norse ships pass Mali had ships patrolling the southern part of the river.
The Caribbean Front was fought between Mali and Wales with Celtic and Norse support. At first even though Wales declared war on Mali it only sent supplies to it wartorn allies to the north. Mali was worried about the Welsh navy, which was the strongest in North Brendania. So far, Wales had only used their navy to re-supply Celtic and Norse soldiers to the north. The Mali fleet was ordered to strike the headquarters of the Welsh Colonial Navy at Cardiff, in OTL Cuba. A Mali fleet, 400 ships strong landed on the northern side of Cuba and made a base there. The soldiers from the fleet built defensive fortifications around the base while the fleet attacked the Welsh fleet. Mali sailors burned the Welsh ships, which were made of wood. When word got to Madoctown about the attack command ordered the Madoctown fleet to attack the Mali fleet. The Madoctown fleet was not as strong as the Mali one but was faster and the crew was more disciplined. Ships were also sent out to attack the Mali base at Cardiff. After a day of fighting Mali was pushed off of Cardiff. Until 1336 Mali and Welsh ships hunted each other in the Caribbean.
Continued Fighting in the Northeast
Fighting continued on Long Island between Norse and Celts against the Mali. The Delaware River remained a stalemate, with neither side really making advancements. Long Island was one as well. Otto Olafsson, a descendent of Thorvald Assvaldsson and Erik the Red, was leader of the Norse fleet in Delaware Bay. His ships continued to patrol the Bay and stop Mali ships from entering. Olafsson's ships under his command numbered at about 200, and he used them well. Mali ships in the area continued to get damaged or destroyed, and without them Mali control of the Delaware Bay completely fell apart. Olafsson sent ships to go up the Delaware to raid Mali ships, and had mixed success there.
The Mali Empire attempted to gain control of Long Island by beginning a renewed assault against the Celts, but could not take much ground.