BI-K4 Light tank of the 5th Armored Recon company
The BI-K4 was an Irish light tank originally People's Republic of Ireland during World War II and the Second Irish Civil War (1943 - 1956). It still saw service in particular with members of the Irish Citizens Expeditionary Forces during the Sino-Vietnamese war, and later the Irish-Imperil war and the Irish-Japanese war. Though weaker than the JSDF tanks it has a smaller profile and is more agile and more versatile which makes its usefully for Guerrilla warfare and Reconnaissance.
They first saw action during the battle of Chi Bian River valley, where despite being obsolete in comparison with PLA tanks, it managed to hold very well against Chinese tanks and IFV's. They were later used in the battle of the Vietnamese Gate where the crew of Alpha 008 saved a pregnant women and her daughter from an Imperial Knight, also their armor protected them from the primitive arrows and crossbow bolts used by the Empire.
The BI-K4 is armed with a type-88N 120ml gun, a DShK 12.7×108mm machine gun, and in some occasions a mounted Type-56N 10ml machine gun.