José P. Laurel
During the Second World War, President José P. Laurel placed the Philippines (then a client state of Imperial Japan) under martial law via Proclamation № 29, dated 21 September 1944 and enforced the following day at 09:00 PST. Proclamation № 30 was issued on 23 September, declaring the existence of a state of war between the Philippines and the United States and the United Kingdom, effective 10:00 that day.