The several states that rose and fell in what is now the Philippines before the Spanish came undoubtedly fought some wars, but they are poorly recorded in general histories.
England occupied Manila form 1762 - 1764 as part of the Seven Years War.
The Cavite Mutiny in 1872 might be considered a war, as might the Philippine Revolution that began in 1896.
Subsequent wars fought on Philippine soil or in Philippine waters include:
You might also consider that the Cold war was waged, in part, in the Philippines.
The Philippines became an american colony
Sheep Wars happened in 1870.
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The Japanese completely conquered the Philippines. Americans lost.
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The Philippines became an american colony
Yavapai Wars happened in 1861.
Space Wars happened in 1977.
The Persian Wars lasted from 499-448 BC. The Pelopenesian Wars lasted from 431-404 BC So the answer is: The Persian Wars happened first.
Meteos Wars happened in 360.
Ozma Wars happened in 1978.
Mytran Wars happened in 2009.
X-Wars happened in 2002.
Gemini Wars happened in 2012.
Carnatic Wars happened in 1746.
Arena Wars happened in 2004.
Trade Wars happened in 1984.