What if your country's military swore allegiance to a party, not a constitution?

This is not a hypothetical in much of the world. The history of the 20th century is substantially the history of what happens when armed forces serve a party, a leader, or an ideology rather than a constitutional order. The German Wehrmacht swore allegiance to Hitler personally in 1934. The Soviet Red Army served the Communist Party. The consequences in both cases were instructive in different ways.

What the constitutional model tries to do is interpose an abstract principle - the law, the state, the people - between the military and whoever happens to currently hold political power. The idea is that a soldier who swears to uphold the constitution has grounds for refusing orders that violate it. Whether that works in practice depends on whether the constitution is genuinely authoritative or merely decorative.

The historical pattern is that party-loyal militaries become instruments of internal repression rather than external defence. They are used against citizens rather than foreign adversaries, because that is where the existential threats to the party originate. This tends to corrode military effectiveness for its nominal purpose while enhancing its usefulness as a political tool.

What's interesting about stable democracies is how much their military's constitutional character depends on culture and tradition rather than legal text alone. The willingness of US military officers to invoke their constitutional oaths during moments of political crisis, the British tradition of the armed forces' political neutrality - these are not legally mandated in any robust way. They are habits that can be eroded.

Once eroded, they are very hard to restore without a crisis serious enough to demonstrate why they mattered.

The constitutional design question here is critical and worth working through carefully. In most democracies, the military's allegiance to the constitution rather than to any individual or party is not simply a matter of oath - it is embedded in structures of civilian oversight, chain of command, parliamentary or congressional control of military funding, and international treaty obligations.

What the hypothetical exposes is that these structures are mutually reinforcing. Any one of them, in isolation, can be circumvented. A legislature that controls military funding can be circumvented if the executive controls enforcement of spending decisions. Courts that can rule on the legality of military deployments can be circumvented if their rulings are simply ignored. The whole system only works when multiple actors across multiple institutions are independently committed to the constitutional framework.

The legal concept of jus cogens is relevant here - certain norms so fundamental that they bind states regardless of positive law. Crimes against humanity committed under orders are prosecutable because military personnel have an obligation that supersedes the instructions of superiors. That principle was established at Nuremberg precisely because it was needed to deal with the aftermath of a party-loyal military.

In practice, a military that swears to a party faces a specific practical problem: parties lose elections, face internal splits, and change leadership. A party-loyal military then faces recurring questions about which faction of the party it serves, which create conditions for exactly the kind of internal coups that constitutional design tries to prevent.

The constitution solves this problem imperfectly, but it at least provides a fixed reference point. Party loyalty has no stable equivalent.

I don't need to imagine this scenario. I lived in a country where the military answered to the party, and what that looks like from the inside is not abstract. It looks like soldiers at checkpoints who are checking not for weapons but for political affiliation. It looks like the phone call you don't make because you don't know who is listening. It looks like the neighbour who disappears and the question that it is wise not to ask.

The difference between a military that serves a constitution and one that serves a party is the difference between a military whose job is to protect citizens and one whose job is to protect the people currently in power from citizens. These sound similar but they are entirely different things in practice.

What I want to say to people in countries where this still feels hypothetical is: the distance between where you are and where I was is not as large as it feels. It is maintained by habits, norms, and institutions that work until they don't. They can be eroded gradually enough that each individual step seems manageable, until one day the cumulative erosion is catastrophic.

The thing that most protected people in the countries where I have lived and lost things was not legal text or constitutional design, though those matter. It was people - in uniform and out of it - who decided that there were limits they would not cross even when ordered to. Those people are the real constitution. When they are gone or intimidated into silence, the written constitution is just paper.

Do not take those people for granted. They are not automatically there. They have to be cultivated, and they can be destroyed.

When you join the British Army, you swear an oath to the Crown — not to any government, not to any party, not to any individual. That distinction matters enormously, and it is not accidental. The people who designed the oath understood exactly what they were trying to prevent.

I spent twenty-two years carrying out orders within a chain of command. What that experience teaches you, faster than anything else, is that the chain only works because the authority runs through the role, not the person. My commanding officer had authority because of what he was, not who he was. The moment that shifts — the moment people are loyal to an individual rather than to a position within a structure — the chain starts to corrode. I saw it happen in smaller ways, in badly led units. The ones where loyalty to the commanding officer personally had replaced loyalty to the regiment. Those units did not perform well under pressure. They did not hold together when the commanding officer was wrong, because no one had built the habit of questioning upward.

The scenario the article describes — a military that swears allegiance to a party rather than a constitution — is not an abstract political thought experiment for me. It describes a structural condition that I have seen the consequences of, at much smaller scale, in organisations that functioned that way. What you get is not a more effective military. You get a military whose capability depends entirely on the virtue of the leader it is loyal to. When that leader has virtue, things go reasonably well. When they don't — and every chain eventually tests for this — you find out that you have dismantled every mechanism for correction.

The military oath to a constitution, or a Crown, or an abstract office, is not idealistic. It is a practical solution to a practical problem: how do you build an organisation that can function, correct itself, and survive bad leadership? You build it so that loyalty runs through the structure, not the man. You make it so that following an illegal order is itself a breach of duty, not an act of loyalty. That is the hinge. Remove it, and you have an organisation that can do enormous things — but only in the direction its leadership points it. Which is fine until the leadership points it somewhere it should not go. Then you have no mechanism left.