 After reaching Tanjong Priok on 10 February , the detachment found itself placed under Dutch command and formed into a composite infantry company , within the reserve battalion of the ad hoc formation known as " Blackforce " , which had been formed under Brigadier Arthur Blackburn . At the end of the month , having taken Sumatra , the Japanese invaded Java with three divisions and a strong naval task force . Fierce fighting at sea ensued , during which 14 out of a force of 18 Allied ships were sunk . Several Japanese transports were also sunk but the majority of Japanese troops were landed . The detachment from the 2 / 4th found itself around Buitenzorg , where the majority of the 2 / 4th personnel formed part of an ad hoc infantry force , known as the Reserve Group , or 3rd Battalion , consisting of eight platoons , under Major John Champion de Crespigny . They fought several defensive actions before being overwhelmed and taken into captivity on 12 March 1942 . A small number continued to fight as guerrillas but were eventually all captured . Some of the men were held in camps in Java and Sumatra , although the majority were later sent to Singapore before being transported to camps elsewhere in south @-@ east Asia . 
 After reaching Tanjong Priok on 10 February , the detachment found itself placed under Dutch command and formed into a composite infantry company , within the reserve battalion of the ad hoc formation known as " Blackforce " , which <a href='been_done' title='1'><mark>had</mark></a> been formed under Brigadier Arthur Blackburn . At the end of the month , <a href='been_done' title='2'><mark>having</mark></a> taken Sumatra , the Japanese invaded Java with three divisions and a strong naval task force . Fierce fighting at sea ensued , during which 14 out of a force of 18 Allied ships <a href='uninflect' title='3'><mark>were</mark></a> sunk . Several Japanese transports <a href='uninflect' title='4'><mark>were</mark></a> also sunk but the majority of Japanese troops <a href='uninflect' title='5'><mark>were</mark></a> landed . The detachment from the 2 / 4th found itself around Buitenzorg , where the majority of the 2 / 4th personnel formed part of an ad hoc infantry force , known as the Reserve Group , or 3rd Battalion , consisting of eight platoons , under Major John Champion de Crespigny . They fought several defensive actions before being overwhelmed and taken into captivity on 12 March 1942 . A small number continued to fight as guerrillas but <a href='uninflect' title='6'><mark>were</mark></a> eventually all captured . Some of the men <a href='uninflect' title='7'><mark>were</mark></a> held in camps in Java and Sumatra , although the majority <a href='uninflect' title='8'><mark>were</mark></a> later sent to Singapore before being transported to camps elsewhere in south @-@ east Asia . 
After reaching Tanjong Priok on 10 February , the detachment found itself placed under Dutch command and formed into a composite infantry company , within da reserve battalion of tdaad hoc formation known as " Blackforce " , which done been formed under Brigadier Arthur Blackburn . At thdand of the month , done taken Sumatra , the Japanese invaded Java with three divisions and a strong naval task force . Fierce fighting at sea ensued , durin which 14 out of a force of 18 Allied ships was sunk . Several Japanese transports was also sunk but the majority of Japanese troops was landed . The detachment from theda/ 4th found itself around Buitenzorg , where the majority of the 2 / 4th personnel formed part of an ad hoc infantry force , known as the daerve Group , or 3rd Battalion , consisting of eight platoons , under Major John Champion de Crespigny . They fought several defensive actions b4 being overwhelmed and taken into captivity on 12 March 1942 . A small number continued to fight as guerrillas but was eventually alll captured . Some of the men was held in camps in Java and Sumatra , although the majority was later sent to Singapore befob4ng transported to camps elsewhere in south @-@ east Asia .