So understand full well that mere knowledge of tactic and theoretical training are of no avail, until they are coupled with action, effort and practice. One ought to observe that it is precisely for this reason that governments do not allow their armies to sit idle. Even in a time of peace and comfort, they create war scenarios to keep their armies engaged, and target practice and parades, etc., are a daily routine. As I have just mentioned, just as knowledge and skill in the use of weaponry and the like is required on the one hand, in order to gain victory in the field of battle, on the other hand, exercise and knowledge of best practice is also imperative. Similarly, in war and battle, trained horses are required – horses that do not fear the sound of guns and canons, and do not scatter and retreat at the sight of chaos; rather, advance, come what may. Similarly, the souls of mankind cannot triumph in the field of battle against the enemies of Allah without tireless exercise, rigorous practice and the best of training.
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 1, pp. 55- 56)