Prepare for the unknown by studying how others in the past have coped with the unforeseeable and the unpredictable.
Do your damnedest in an ostentatious manner all the time.
Success in war depends upon the golden rule of war.
Always advance. Never dig in.
The real hero is the man who fights even though he is scared.
Unless you do your best, the day will come when, tired and hungry, you will halt just short of the goal you were ordered to reach, and by halting you will make useless the efforts and deaths of thousands.