1946 1947–1948 1949 Post-RTC Operation Product was a Dutch military offensive against areas of Java and Sumatra controlled by the de facto Republic of Indonesia during the Indonesian National Revolution.

[citation needed] On 21 July, Dutch, whose forces armed with US produced lend-lease equipment and trained in modern warcraft, deployed three divisions in Java and three brigades in less-densely populated Sumatra.

Republican army (Tentara Nasional Indonesia or TNI) tried to slow the Dutch advance by blowing up bridges, setting up roadblocks, laying ambushes and detonating roadside bombs.

Despite the government of the State of East Indonesia expressing support for the Dutch action,[8] international pressure led to a ceasefire in January 1948 followed by a formal armistice.

Mutual distrust between the two sides, growing tension, and the belief that Indonesia was weakened by Darul Islam and socialist Madiun Affair, led Holland to conduct a second military offensive code-named Operation Kraai.