Deborah, The King Philip's war (1675 - 1676) was fought in what is now southeastern Massachusetts and parts of Rhode Island and Connecticut. King Philip was the name given by the English to the Chief of the indians in the area.
At the time Matthew Fuller was a Captain of the Plymouth Colony Militia and apparently did have some significant action during the war. There are many accounts of some of his actions on line and some geanelogy family pages that also have more detailed information. If you are a descendent of Matthew Fuller then you are probably related to many of these families posted.
Do a google search on;
king philip's war; king philip's war plymouth; and king philip's war plymouth "capt fuller"
Here are a few link's for you to look at that will help;