Citizens' armies require precise objectives to justify sacrifice. [causal]
One does not propose to soldiers to go and get killed for an imprecise final objective…. This is the difference, moreover, between the mercenary army and the citizens' army. One can thus only ask of soldiers of the army of Algeria today that they die in order for Algeria to remain French.
Horne, Alistair, A Savage War of Peace- Alge…, loc. 1058