About how an army is possible

I am a woman and so I have always thought that an army is in these modern times quite as simple and straightforward question as in the old times: one just learns skills for life and if needed such are useful in the army too. But boys maybe in the beginning and maybe later too take army too much to their heart and so they start on their own all kinds of endeavours which ought to give high skills and military advantage in their opinion but which in practice just destroy the whole thing and maybe even make an army impossible. So how is an army possible? One ought not take a too big bite, not too demanding task, and one oguht to take care things things stay well in tehs ociety and get cured well again if they are not well. That means that one must ally with the civilized views of very many countries, not at their literal level but at the level of universal values and objectivity, at the levl of what the world largely is and what the good things are based on like trade for example. A very close contact is often a clash, so such is not advisable. Instead one should follow civiliced ways so much that they solve problems one otherwise would have. Instead of aiming at an unwincible army of high might, one ought to aim at having at least some kind of army or an attempt at defending a country and not at a mess to begin with, not at ruining everything already at peace time. Thta means having basic skills, for example being sporty and understanding about the things that are goals in the society.