In the autumn of 1916, a secret memo lan...

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In the autumn of 1916, a secret memo landed on the desk of the British government. It did not say the army was running out of men. It did not say the navy was losing ships. It said something much stranger. Britain, the country that had run the world's financial system for a century, was about to run out of dollars. Not soldiers. Not shells. Dollars. Within a matter of weeks, the Treasury warned, Britain might not be able to pay for the American wheat, steel, and ammunition its army needed just to keep fighting. But to understand how the richest empire on earth nearly went bankrupt in the middle of the war it was supposed to win, we have to go back to the summer of 1914, when almost nobody thought money would be the problem at all.

I am Coined, and on this channel, we look at history through the lens of money. Today we are looking at how Britain actually paid for the First World War, and what that bill ended up costing for the next hundred years.

In August 1914, Britain was, by most measures, the wealthiest and most financially powerful country on the planet. London was the centre of the world's money, the place where trade in half the globe was settled and financed. The pound sterling was as good as gold, literally, because Britain sat on the gold standard, meaning anyone could walk into the Bank of England and exchange paper for bullion.

British investors owned railways in Argentina, mines in South Africa, bonds in Russia, and government debt across half of Europe. The Treasury's national debt sat at around six hundred and fifty million pounds, a figure that felt entirely manageable for a nation this rich. The Bank of England, though privately owned at the time, effectively functioned as the central bank for the entire world, and sterling was the currency everyone else measured their own money against.

London's dominance went far beyond a few grand banking halls in the City. Insurance underwritten there protected ships loading cargo on the other side of the planet, and shipping lines controlled from the Thames carried a huge share of the world's trade between them. Merchants in Buenos Aires, Bombay, and Shanghai settled their accounts in sterling because sterling was simply assumed to hold its value, year after year, decade after decade. That kind of trust takes generations to build, which is exactly why almost nobody in London in the summer of 1914 imagined it could be spent down within a few short years of fighting.

And the government's financial plan for the war reflected that confidence. Nobody in the cabinet was budgeting for a four-year industrial slaughter. The assumption, shared across most of Europe, was that this would be a short, sharp conflict, funded the old-fashioned way, with a bit of borrowing and a modest tax rise, the same playbook Britain had used for wars against Napoleon a century earlier.

The thing that got me when I was researching this part was just how quickly that assumption fell apart. Within months, it was obvious this war was not going to behave like any war Britain had fought before. This was not going to be cavalry charges and set-piece battles settled in a season. This was going to be trenches, machine guns, and an appetite for shells that nobody in Whitehall had ever planned a budget around.

The first real shock came in 1915, with what became known as the shell crisis. The British army in France was firing artillery shells faster than British factories could possibly make them, and the shortage was severe enough to become a public scandal, one that helped bring down the sitting government and forced the creation of an entirely new Ministry of Munitions under David Lloyd George. That ministry would go on to oversee an enormous expansion of state-run industry, pulling women into munitions factories in numbers nobody had planned for, and pouring public money into plants that simply had not existed two years earlier. But here is the problem hiding underneath that headline.

Shells are not free. Every single one had to be paid for, in a war where the scale of spending had no historical precedent to plan against. Factories had to be requisitioned, workers retrained, raw materials imported, and all of it financed at a pace the Treasury had never been asked to manage before.

Britain was about to discover that this conflict would be won or lost as much in the ledgers as on the battlefield. The men and women who staffed those new munitions plants worked brutal shifts handling dangerous chemicals for a wage that, however welcome, never quite matched the risk, and their labour is easy to forget once the conversation turns to Treasury balance sheets and government bonds.

So how do you pay for a war that keeps getting bigger every year. Britain's Treasury reached for three main levers, and pulled all of them at once. The first was direct taxation. Income tax, which sat at a modest rate before the war, close to about six percent for most payers, was raised again and again under successive Chancellors until by the final year of the war it had climbed past thirty percent for higher earners.

A new excess profits duty was introduced in 1915, specifically targeting companies making outsized profits from war contracts, because the public was, understandably, furious at the idea of anyone getting rich off the trenches while soldiers earned a private's shilling a day. The Defence of the Realm Act gave the government sweeping new powers to requisition factories, control industries, and direct the economy in ways that would have been unthinkable in peacetime Britain just a few years earlier. Before the war, income tax had barely touched ordinary working households at all, since the personal allowance sat comfortably above what most people ever earned. By 1918, falling allowances and rising rates meant a much wider slice of the population was paying income tax for the very first time in their lives, whether they had the spare income for it or not.

The second lever was borrowing from the British public itself, through a series of war loans and war bonds issued in 1914, 1915, and again in 1917. The government ran enormous publicity campaigns urging ordinary citizens to lend their savings to the state, framing it as patriotic duty rather than investment. And honestly, when I first read about the scale of these campaigns, it struck me how much of the war effort ran on emotional persuasion rather than just economics. Posters, rallies, even door to door canvassing, all designed to get grandmothers and shopkeepers to hand over their savings for a government I.O.U. Alongside the big War Loan issues, the Treasury also sold small war savings certificates specifically aimed at people who could never have afforded a full bond, which meant a factory worker or a domestic servant could lend the government a few shillings at a time. Millions of ordinary people subscribed in total, some putting in a few shillings, others their entire life savings, and the sums raised this way ran into billions of pounds by the war's end, a figure that dwarfed anything the British state had ever borrowed from its own citizens before.

The third lever was the one that would eventually cause the real trouble. Because taxes and domestic bonds could fund the war in pounds, but pounds were not what Britain actually needed most. Britain needed dollars.

The shells, the wheat, the steel, most of it was coming from the United States, a country that was not yet in the war and had no interest in accepting British pounds for its goods. Which makes what happened next completely unavoidable. Britain was going to have to find American money, one way or another, and that search for dollars is what nearly broke the empire's finances by 1916.

At first, Britain paid its American bills the way any wealthy investor would. It sold off assets. British citizens and the British government itself liquidated enormous holdings of American stocks and bonds accumulated over decades, essentially cashing in a century of overseas investment to buy the tools of a war nobody expected to last this long.

The Treasury even asked wealthy British subjects to voluntarily sell their American securities to the state in exchange for war bonds, so the government could resell them in New York for hard dollars. When that started running dry, Britain shipped physical gold across the Atlantic, boatload after boatload of it, straight into vaults in New York, just to keep the credit flowing. Estimates from the period suggest hundreds of millions of dollars in gold crossed the ocean this way over the course of the war, a slow, steady drain on the very reserves that had once made sterling look unshakeable.

In 1915, the British and French governments made an arrangement that tells you everything about how desperate this had become. They appointed the American bank J.P. Morgan as their official purchasing agent in the United States, essentially outsourcing the buying of their own war supplies to a private Wall Street firm. That same year, Morgan helped arrange an Anglo-French loan worth close to five hundred million dollars, one of the largest foreign loans Wall Street had ever underwritten, just to keep the arrangement running. This is where it gets properly uncomfortable, because Britain, the nation that had spent a century lecturing the world about sound finance and the gold standard, was now dependent on the goodwill of American bankers just to keep its army fed and armed.

Which brings us back to that secret memo from the hook. By the autumn of 1916, the Chancellor of the Exchequer, Reginald McKenna, was warning the Prime Minister in stark terms that Britain's dollar credit was close to exhausted. The country's own Treasury records from the period suggest the situation was genuinely dire, close enough to the edge that senior officials believed Britain might be unable to meet its American obligations within a matter of weeks. The thing that really got me here is that this was not some minor accounting hiccup. If Britain could not pay, the shells stopped, the wheat stopped, and an army of millions on the Western Front would find out that a war is, underneath everything else, a supply chain, and supply chains run on money. That December, Asquith's government fell and Lloyd George took over as Prime Minister, and while plenty of factors drove that change, the mounting financial strain sitting behind closed doors in the Treasury was very much part of the picture.

None of this reached the newspapers at the time. Publicly, the government kept projecting total confidence, still selling war bonds on posters promising victory was only a matter of time, while privately its own Treasury officials were drafting memos about running out of money within weeks. That gap between the public message and the private panic is, honestly, the part of this story that still unsettles me the most.

The crisis eased in April 1917, when the United States finally entered the war itself. Almost overnight, the relationship changed from private banks lending reluctantly to the American government lending directly and deliberately, through a wave of Liberty Loans that funnelled billions of dollars toward Britain, France, and their allies. Those American Liberty Loan drives were mass public spectacles in their own right, complete with rallies, celebrity endorsements, and neighbourhood subscription targets, essentially the same playbook Britain had used at home, now aimed at American citizens instead.

But here is the problem the peace treaty would later run into. This money did not disappear when the guns fell silent in November 1918. It sat there, as debt, and it sat there in a strange tangle. Britain now owed enormous sums to the United States, while simultaneously being owed enormous sums by France, Italy, and Russia, who it had been funding throughout the war as the self-appointed banker of the alliance.

France alone owed Britain a debt roughly comparable in size to what Britain itself owed Washington, and Italy owed a substantial sum on top of that, which meant Britain sat in the middle of the whole ledger, obligated in one direction and owed in another.

And then things got properly complicated, because one of Britain's largest debtors simply vanished from the ledger. After the Russian Revolution in 1917, the new Bolshevik government repudiated the debts of the old Tsarist regime entirely, meaning Britain had lent vast sums to a country that no longer considered itself obligated to pay any of it back. So Britain ended the war as both one of the world's largest creditors and one of its largest debtors at the same time, a financial position historians still describe as almost uniquely awkward.

By the time the guns finally stopped, Britain's national debt had exploded from that pre-war figure of around six hundred and fifty million pounds to something in the region of seven and a half billion pounds, a more than tenfold increase in just over four years. Interest payments on that debt alone would go on to swallow a huge share of the government's budget for the next two decades, money that could otherwise have gone toward housing, healthcare, or pensions for the very veterans who had fought the war in the first place. Successive governments through the 1920s found themselves balancing budgets around a debt burden inherited from a conflict that was already over, which meant the war kept shaping British public spending long after the last shot was fired.

The war had been won. The bill had only just arrived.

The peace did not make the money problem go away, it just changed its shape. Through the early 1920s, an Inter-Allied Debt Commission tried to untangle who owed what to whom, and Britain proposed what became known as the Balfour Note, offering to forgive what France and Italy owed if the United States would forgive what Britain owed. Washington firmly rejected the idea, insisting that war debts and reparations were entirely separate questions. In 1925, Britain's Chancellor, Winston Churchill, made the fateful decision to return the country to the gold standard at its old pre-war rate, a move meant to restore Britain's financial prestige and reassert sterling's place at the centre of world finance.

Instead, records suggest it overvalued the pound so badly that it crushed British exports and dragged the economy into years of unemployment and industrial unrest, contributing directly to the General Strike of 1926, a nine-day dispute that brought much of British industry to a standstill and hardened class divisions that had already been strained by four years of unequal sacrifice. The economist John Maynard Keynes attacked the decision almost immediately, arguing that Churchill had sacrificed the livelihoods of coal miners and factory workers for the sake of financial pride. And honestly, that part still gets me, because it means the financial hangover from the war was still actively hurting ordinary working people a full decade after the armistice.

Then the Great Depression hit, and the whole fragile system of war debts collapsed with it. In 1931, the American President Herbert Hoover approved a one-year moratorium on war debt payments as the global economy went into freefall. Britain made a final token payment in 1934 and then, like almost every other European debtor, quietly stopped paying altogether, prompting the United States Congress to pass the Johnson Act, barring further loans to any country in default. For the rest of the 1930s, Britain's outstanding First World War debt to America simply sat there, unpaid and largely unmentioned, a quiet embarrassment on both sides of the Atlantic, right up until an entirely new war arrived and Britain found itself, once again, asking Washington for help paying for it. When the Second World War broke out, the United States structured its support very differently, through Lend-Lease rather than straightforward loans, and historians generally agree the bitter memory of unpaid First World War debts shaped exactly how reluctant Washington was to simply hand over money the second time around.

Which brings us to the detail that first pulled me into this whole story. Britain did not fully settle its remaining First World War borrowing until 2015, when the Treasury redeemed the last of the old war bonds still outstanding on the government's books, repaying close to two billion pounds in old debt in a single transaction. A war that ended in November 1918 was still, technically, being paid off ninety-seven years later, long after every soldier who fought in it had died. The guns stopped in 1918. The bill kept running until 2015.

That is genuinely wild to think about, and I would love to know what surprised you most here, so drop it in the comments. If you enjoyed this one, there are plenty more where money and history collide.