The first lesson I learnt as a soldier was never to underestimate the enemy.作为一名士兵，我学到的第一课就是决不要低估敌人。The first lesson I learnt as a soldier was never to underestimate the enemy.身为一名士兵，我学到的第一课就是决不要轻视敌人。Almost the first lesson they learn is how to dissociate emotion from reason.基本上他们得到的第一个教训就是如何将情感和理智分开。