Rabaul was captured on 23 January 1942 , Singapore fell on 15 February , Lae and Salamaua were occupied on 8 March .
Java surrendered on 9 March .
Rabaul was captured on 23 January 1942 , Singapore fell on 15 February , Lae and Salamaua were occupied on 8 March , and Java surrendered on 9 March .