The Borneo War

* Army
	+ 1st Division
		- 1st Infantry Brigade
		- 2nd Infantry Brigade
		- 3rd Infantry Brigade
	+ 2nd Division
		- 1st Cavalry Brigade
		- 1st Light Infantry Brigade
		- 4th Infantry Brigade
	+ 3rd Division
		- 5th Infantry Brigade
		- 6th Infantry Brigade
		- 7th Infantry Brigade
	+ 4th Division
		- 2nd Cavalry Brigade
		- 8th Infantry Brigade
		- 9th Infantry Brigade
	+ 5th Division
		- 10th Infantry Brigade
		- 2nd Light Infantry Brigade
		- 3rd Light Infantry Brigade
	+ 6th Division
		- 11th Infantry Brigade
		- 4th Light Infantry Brigade
		- 5th Light Infantry Brigade
	+ 7th Division
		- 12th Infantry Brigade
		- 6th Light Infantry Brigade
		- 7th Light Infantry Brigade
	+ 8th Division
		- 13th Infantry Brigade
		- 8th Light Infantry Brigade
		- 9th Light Infantry Brigade
	+ 9th Division
		- 14th Infantry Brigade
		- 10th Light Infantry Brigade
		- 11th Light Infantry Brigade
	+ 10th Division
		- 15th Infantry Brigade
		- 12th Light Infantry Brigade
		- 13th Light Infantry Brigade
	+ 11th Division
		- 16th Infantry Brigade
		- 14th Light Infantry Brigade
		- 15th Light Infantry Brigade
	+ 12th Division
		- 17th Infantry Brigade
		- 16th Light Infantry Brigade
		- 17th Light Infantry Brigade
	+ 13th Division
		- 18th Infantry Brigade
		- 18th Light Infantry Brigade
		- 19th Light Infantry Brigade
	+ 14th Division
		- 19th Infantry Brigade
		- 20th Light Infantry Brigade
		- 21st Light Infantry Brigade
	+ 15th Division
		- 20th Infantry Brigade
		- 22nd Light Infantry Brigade
		- 23rd Light Infantry Brigade
	+ 16th Division
		- 21st Infantry Brigade
		- 24th Light Infantry Brigade
		- 25th Light Infantry Brigade
	+ 17th Division
		- 22nd Infantry Brigade
		- 26th Light Infantry Brigade
		- 27th Light Infantry Brigade
	+ 18th Division
		- 23rd Infantry Brigade
		- 28th Light Infantry Brigade
		- 29th Light Infantry Brigade
	+ I Corps HQ
	+ II Corps HQ
	+ III Corps HQ
	+ IV Corps HQ
	+ V Corps HQ
	+ VI Corps HQ
	+ East Army HQ
	+ West Army HQ
	+ 158,240 Reserves (completely expended)

* Army
	+ 1st Division
		- 1st Cavalry Brigade
		- 5th Infantry Brigade
		- 2nd Infantry Brigade
	+ 2nd Division
		- 3rd Infantry Brigade
		- 4th Infantry Brigade
		- 1st Light Infantry Brigade
	+ 3rd Division
		- 1st Infantry Brigade
		- 2nd Light Infantry Brigade
		- 3rd Light Infantry Brigade
	+ 4th Division
		- 6th Infantry Brigade
		- 4th Light Infantry Brigade
		- 5th Light Infantry Brigade
	+ 5th Division
		- 7th Infantry Brigade
		- 6th Light Infantry Brigade
		- 8th Light Infantry Brigade
	+ 6th Division
		- 8th Infantry Brigade
		- 7th Light Infantry Brigade
		- 9th Light Infantry Brigade
	+ 7th Division
		- 9th Infantry Brigade
		- 10th Light Infantry Brigade
		- 11th Light Infantry Brigade
	+ 8th Division
		- 10th Infantry Brigade
		- 12th Light Infantry Brigade
		- 13th Light Infantry Brigade
	+ 9th Division
		- 11th Infantry Brigade
		- 14th Light Infantry Brigade
		- 15th Light Infantry Brigade
	+ I Corps HQ
	+ II Corps HQ
	+ III Corps HQ
	+ Army HQ
	+ 99,120 Reserves

## War Aims

The more populous southern portion of the island known as both Borneo and Kalimantan long sought control over the entire island. However, the jungle-covered interior of the island prevented Kalimantan from using numbers to its advantage; in any conflict, its forces were forced to fight within 100 miles of the ocean, allowing the northern half of Borneo to resist. The two fronts remained locked in stalemate for two centuries, with sporadic fighting on and off. In late 299 NE, however, advancements in supply technology and strategy allowed the two countries to carry their war further inland, thus allowing Kalimantan to wield its advantage in numbers

## Battles

Battle of Singkawang: On December 29th, 299, Borneo's 1st Marine Regiment lands at Singkawang, behind Kalimantan lines. The Kalimantan 10th Division, held in reserve, marches north from Pontianak along the coast for four days while the marines construct defenses. Riots break out on New Year's Day, prompting the massacre of thousands of civilians. On January 3rd, the 10th Division takes positions around the city, but comes under the bombardment of the Borneo Fleet. The Marines hold in their defensive positions for 10 days, repelling many assaults. Finally, running low on manpower and ammunition, the Marines withdraw into the city and continue to harass the 10th Division into mid-February, when all 2,720 Marines are killed.

* Casualties:
	+ Borneo: 2,720
	+ Kalimantan: 10,430
	+ Civilian: 9,843

First Battle of Kuching: On January 1st, 300, the Kalimantan 15th Division cuts off the thin sliver of Borneo connecting Kuching to the rest of the country. Surrounded by the Kalimantan VI Corps (the 1st, 9th, and 16th Divisions), the Borneo 5th Division withdraws to defensive positions around the city of Kuching. Kalimantan unleashes heavy artillery on the city beginning January 3rd in retaliation for the massacre at Singkawang. Portions of the Borneo fleet split from their positions at Singkawang to evacuate Borneo's III Corps HQ. Kalimantan's VI Corps begins assaulting the city, but fails to gain much ground in the rubble. By January 9th, Borneo's positions are beginning to fall. On the 10th, Borneo's 6th Division catches Kalimantan's 15th Division by surprise 75 miles east of the city, shattering its defenses as eliminating its headquarters. The remaining troops retreat southwards. The 1st Kalimantan Division is forced to withdraw its assault on Kuching to face the 6th Division southeast of the city. The superior 1st Division repels the 6th Division on January 13th with ease, but the 6th Division fights on to keep the 1st occupied. On January 19th, the Borneo 3rd Division arrives with reinforcements for the 6th Division. The 1st Kalimantan Division crumbles, caught between Borneo's attacking troops and the city. The 16th Kalimantan Division is pulled off the offensive to assist, but has lost too many casualties to be of much help. On January 29th, the Kalimantan 9th and 16th Divisions withdraw across the border. The remainder of their 1st Division surrenders on the 31st. III Corps HQ returns to Kuching.

* Casualties:
	+ Borneo: 13,843
	+ Kalimantan: 22,361
	+ Civilian: 4,532

Battle of Tarakan: The 8th Borneo Division takes up positions on the mainland facing the island of Tarakan on January 5th, 300. The 5th Kalimantan Division, already on a northward march, attempts to eradicate those positions. Instead they are met with an ambush by the Borneo 9th Division, and are trapped against the sea until January 11th, when they surrender. In reaction, the Kalimantan 12th Division attempts to attack the 9th Division from the jungle, while the 6th Division attacks the 8th Division from the island. Instead, the Kalimantan 12th Division is ambushed by the Borneo 7th Division and surrounded. The Kalimantan 6th Division, trapped against the sea, surrenders on January 18th. The Kalimantan II Corps, which was previously marching north, launches an assault against Borneos' forces on January 23rd. They initially succeed, forcing all three Borneo division to retreat. In pursuit, Kalimantan's forces run into the newly deployed 2nd and 4th Divisions of Borneo. The 7th, 8th, and 9th Borneo divisions break off their retreat and attack II Corps' flank, trapping all three divisions against the sea. On the 26th, Kalimantan lands their Marine Brigade in Tarakan, and their fleet begins bombarding Borneo's positions. Kalimantan's III Corps, the last of their East Army, arrives on the 31st. The ensuing battle is the largest of the war. Borneo's 8th and 9th Divisions press their attack on Kalimantan's II Corps. Their 7th Division guards the coast. The 2nd and 4th Divisions constantly shift their defensive positions so that Kalimantan will not have a good opportunity to break the line. On February 10th, the Borneo Fleet arrives, catching the Kalimantan fleet off guard, and smashes them. Kalimantan loses all 3 of their cruisers, 7 frigates, and half of their transports and patrol boats. Borneo loses 1 cruiser, 4 frigates, 1 transport, and 10 patrol boats. Having lost the hope of supply from the sea, Kalimantan's II Corps begins to suffer. By February 14th they have run out of ammo, and are forced into a final, suicidal charge. Kalimantan's 18th and 11th Divisions fail to escape, and the survivors surrender. The 4th Division escapes with heavy casualties, as does the 12th Division, as they shatter Borneo's 8th Division. Borneo's 8th Division survivors are folded into the 9th Division, while Kalimantan's 4th and 12th Division survivors are dispersed among the 13th, 3rd, and 17th divisions. Low on supplies and trapped in Tarakan, Kalimantan's Marine Brigade begins raiding the city for food. Kalimantan's 3rd and 13th divisions retreat southward to Bontang while the 17th division is sacrificed as a rear guard. Borneo's 7th Division then lands on Tarakan, taking heavy casualties against the Kalimantan Marines, but ultimately taking the city. Fighting around Tarakan ends on March 16th.

* Casualties:
	+ Borneo: 36,457
	+ Kalimantan: 92,592
	+ Civilian: 3,462

Battle of Makassar Strait: At the Makassar Strait on February 28th, 300, the Borneo fleet, at the cost of 6 patrol boats and 1 frigate, sunk the remainder of the Kalimantan fleet.

* Casualties:
	+ Borneo: 260
	+ Kalimantan: 1,670

Battle of Bontang: With Borneo still maintaining 40,000 reserve troops and Kalimantan down to 25,000, the war was looking bleak for Kalimantan. Once again at full strength, Borneo's 4th Division led I Corps' march south to Bontang, which was only defended by Kalimantan's I Corps HQ. They had withdrawn their 3rd and 13th divisions to Samarinda, and placed them under the command of II Corps. Kalimantan's I Corps surrendered with minimal casualties on March 30th.

* Casualties:
	+ Borneo: 130
	+ Kalimantan: 310

Second Battle of Kuching: In an effort to redirect Borneo's attention, Kalimantan's West Army attacked the city of Kuching once more. Now at full strength, their 9th, 16th, and 10th divisions attacked toward the city directly, while the 15th and 8th Divisions sought to cut the city off once more. The 8th Division became locked in a struggle with Borneo's 1st Division on March 30th. Borneo's 3rd Division stopped the Kalimantan 15th Division in its tracks. Borneo's 5th and 6th Divisions defended the city itself. On April 15th, facing heavy casualties in a back and forth battle, Kalimantan consolidated its 9th and 16th Divisions. During their reorganization, Borneo's 5th Division counterattacked and broke through, scattering Kalimantan's VI Corps HQ. Half of the consolidated 9th Division was trapped against the sea. The 6th Division exploited the gap, flanking Kalimantan's 10th Division and breaking the siege of the city. On April 17th, Kalimantan's 9th Division surrendered. This allowed Borneo's 5th Division to march south. Kalimantan's 8th, 15th, and 10th Divisions now had no access to the coast. They began to retreat quickly, sacrificing the 15th Division as a rear guard. The 8th Division remained trapped inland with the V Corps HQ, while the 10th Division raced to Pontianak to prevent Borneo from rushing down the coast. Borneo's 5th Division occupied Singkawang on April 30th.

* Casualties:
	+ Borneo: 22,462
	+ Kalimantan: 35,960

Battle of Samarinda: On April 26th, 300, Borneo's I Corps reached Samarinda. The 4th and 9th Divisions immediately began an attack on the city, which was defended by Kalimantan's 3rd and 13th Divisions. With Borneo's fleet blockading Balikpapan to the south, supplies could not reach the Kalimantan army. Kalimantan's forces retreated south hastily on April 29th, returning to III Corps while II Corps' HQ was sacrificed as a rear guard.

* Casualties:
	+ Borneo: 3,320
	+ Kalimantan: 4,160
	+ Civilian: 637

Battle of Balikpapan: Upon departing Samarinda, Kalimantan's 13th and 3rd Divisions found Borneo's 7th Division guarding Balikpapan Bay. Cut off by land and sea, Kalimantan's East Army made its final stand at Balikpapan against Borneo's I Corps. The siege lasted the entirety of May and June, with slow but consistent progress for Borneo. Only a couple thousand Kalimantan troops surrendered while defending the capital. Faced with heavy casualties, Borneo's 7th Division was folded into their 2nd Division.

* Casualties:
	+ Borneo: 26,630
	+ Kalimantan: 25,432

The Interior Campaign: With Kalimantan's IV Corps having cancelled its deployment to the western front upon Kalimantan's defeat at Kuching, the last three full-strength Kalimantan divisions began constructing defensive positions around Banjarmasin and Banjarbaru on April 30th. Kalimantan's 8th Division, trapped in the interior, performed a delaying action against Borneo's 1st Division through the center of Kalimantan territory. V Corps was abandoned and its troops folded into the 8th Division. Through the month of May, the 8th Division beat a retreat through the mountains, harassing the 1st Division as it pursued them. Both armies took more casualties from malaria and other diseases than from gunfire.

* Casualties:
	+ Borneo: 3,250
	+ Kalimantan: 2,960

Battle of Pontianak: On May 4th, Borneo's 3rd and 6th Divisions unleashed an assault on the Kalimantan city of Pontianak. Kalimantan's 10th Division, without reinforcements, crumbled quickly, but refused to surrender. After this battle ended on May 20th, Borneo had run out of reserves.

* Casualties:
	+ Borneo: 9,872
	+ Kalimantan: 10,998

Battle of Palangka Raya: On June 2nd, Borneo's 1st Division chased Kalimantan's 8th Division into the city of Palangka Raya. There, the 1st Division was ambushed by Kalimantan's 14th Division, which inflicted heavy casualties, immobilizing the 1st Division, before it retreated to Banjarmasin. The 8th Division joined Kalimantan's IV Corps as a reserve force.

* Casualties:
	+ Borneo: 5,010
	+ Kalimantan: 2,360

Battle of Banjarmasin: In early August, Borneo dissolved its 1st Division and used it to reinforce its III Corps as it took up positions west of Banjarmasin. Borneo's I Corps took up positions to the east, around Banjarbaru. Borneo's Army HQ deployed to Balikpapan as its II Corps HQ was dissolved and sent to reinforce front line troops. Using their fleet to blockade the coast, Borneo dug in deep and waited for Kalimantan to run out of supplies. The siege lasted well into December. Borneo's 4th and 9th Divisions then launched an attack on Banjarbaru, quickly overrunning the starving garrison. Kalimantan's 7th Division survivors were folded into its 8th Division. This attack allowed Borneo to tighten the noose, and by February 15th, 301, with military and civilian casualties from starvation and disease mounting, Kalimantan surrendered its sovereignty.

* Casualties:
	+ Borneo: 4,360
	+ Kalimantan: 25,430
	+ Civilian: 59,860

## Aftermath

Having used the advantages of the jungle better than Kalimantan, Borneo was able to gain an early advantage that it exploited to win the war, despite being outnumbered 2:1. It apologized to the people of Singkawang for the massacre that occurred early in the war, and sought reconciliation with the people of Kalimantan. A path to full citizenship for former Kalimantan citizens was established. Manpower had been drastically reduced, so the economy had a difficult time recovering from the war. To compensate, Borneo lowered taxes to promote family growth.