B.h. Liddell Hart said this quote

The history of ancient Greece showed that, in a democracy, emotion dominates reason to a greater extent than in any other political system, thus giving freer rein to the passions which sweep a state into war and prevent it getting out—at any point short of the exhaustion and destruction of one or other of the opposing sides. Democracy is a system which puts a brake on preparation for war, aggressive or defensive, but it is not one that conduces to the limitation of warfare or the prospects of a good peace. No political system more easily becomes out of control when passions are aroused. These defects have been multiplied in modern democracies, since their great extension of size and their vast electorate produce a much larger volume of emotional pressure.

~ B.h. Liddell Hart

Universal peace-time conscription was adopted by almost all countries as the basis of their military system. This ensured that wars would grow bigger in scale, longer in duration, and worse in effects. While conscription appeared democratic, it provided autocrats, hereditary or revolutionary, with more effective and comprehensive means of imposing their will, both in peace and war. Once the rule of compulsory service in arms was established for the young men of a nation, it was an obvious and easy transition to the servitude of the whole population. Totalitarian tyranny is the twin of total warfare —which might aptly be termed a reversion to tribal warfare on a larger scale.

~ B.h. Liddell Hart

The principle of compulsory service, embodied in the system of conscription, lias been the means by which modem dictators and military gangs have shackled their people after a coup d'état, and bound them to their own aggressive purposes. In view of the great service that conscription has rendered to tyranny and war, it is fundamentally shortsighted for any liberty-loving and peace-desiring peoples to maintain it as an imagined safeguard, lest they become the victims of the monster they have helped to preserve.

~ B.h. Liddell Hart

Mechanized warfare still left room for human qualities to play an important part in the issue. ‘Automatic warfare’ cancels them out, except in a passive form. Archidamus is at last being justified. Courage, skill and patriotism become shrinking assets. The most virile nation might not be able to withstand another, inferior to it in all natural qualities, if the latter had some decisively superior technical appliance. (...)The advent of ‘automatic warfare’ should make plain the absurdity of warfare as a means of deciding nations’ claims to superiority. It blows away romantic vapourings about the heroic virtues of war, utilized by aggressive and ambitious leaders to generate a military spirit among their people. They can no longer claim that war is any test of a people’s fitness, or even of its national strength. Science has undermined the foundations of nationalism, at the very time when the spirit of nationalism is most rampant.

~ B.h. Liddell Hart