This bit is calculating by adding the 5% not multiplying them :

Originally Posted by Locane
60 x 1.5 (50% Warfare bonus) = 90

It should be multiplied by 1.05 ten times.

60 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 * 1.05 = 98