Time travel gone wrong

Airman first class Matters; trained in fighting (knows 6 different forms of martial arts), throwing knifes, has marksmanship for shooting, knows archery, and happens to be a explosive ordnance disposal trained. Sent on a mission to kill a terrorist who was caught hiding in Scotland near the Callanish Stones. While on a mission something goes wrong and now Matters is stuck 1743 compared to 2015.