Complex sentence: Even in 1614, many fencing masters based their fighting styles on the tradition, (an example would be master Joachim Meyer, who based his early rapier fencing on Lichtenauers principles), which was considered to be the most effective and efficient school of fencing.
Split into simpler sentences: Even in 1614, many fencing masters based their fighting styles on the tradition. An example would be master Joachim Meyer, who based his early rapier fencing on Lichtenauers principles, which was considered to be the most effective and efficient school of fencing.