The First World War brought a level of destruction that the world had never seen before. At the start of the war, only the French, Russians, English, and Italians stood against the Germans, Austro-Hungarians, and the Ottomans with their respective territories/colonies/provinces each filing in under their protectorate states. Every corner of the world was forced to take sides, officially or otherwise.
Neutral nations would be asked politically at first, but were quickly strong-armed into supporting one side or the other. This same fate could have befallen Afghans — who were distrusting of British India to the East and the Allied Russians to the north — if the negotiations hadn't gone spectacularly wrong.
In September, 1915, the Germans saw in opportunity in exploiting the Afghan tribes' strategic advantage against the Allied troops that had left British India to fight in Europe. Persia had been officially neutral, but swung sides depending on who was more in control (Note: This was before the Turkish Invasion of Persia, which would eventually solidify their anti-Ottoman stance). If Afghanistan would join the Ottomans, the Persians would certainly follow. After all, the Afghan people hated the British and most of the ruling parties. All that stood in the way of a Central Powers-controlled Middle East and a wide-open causeway through India was a hesitant Amir Habibullah Khan, then the leader of Afghanistan.
The Ottomans leveraged much religious control over their fellow Muslim nations. Grassroots protests ran rampant in British-controlled India. Things were at a tipping point and all it would take was some sweet talking by a Bavarian officer, Oscar Niedermayer, on official orders from the Kaiser to go win them over. On paper, the plan was flawless.
Don't worry. Niedermayer maybe won't screw things up just yet.
Niedermayer and his team traveled to Constantinople to meet up with their Turkish counterparts. Despite being in friendly territory, the mission was to be highly covert — one that, if compromised, could end in death for everyone involved. Yet, when the Turks showed up to the Pera Palace Hotel, they found the Germans sh*tfaced drunk, openly telling everyone that they're going on an Afghanistan Expedition. Understandably, the Turks said, "f*ck it" and left, unwilling to be part of a botched mission that would have them executed if gone poorly due to the actions of some drunken idiots.
After the disaster in Constantinople, Berlin sent in Prussian diplomat, Werner-Otto von Hentig, to join in. Von Hentig was a consummate professional and had brought with him Raja Mahendra Pratap, an Indian royal who wanted to take control back from the British, to aid in negotiations. Niedermayer took great offense to this and constantly butted heads with von Hentig.
The combined teams finally reached Kabul to start negotiations anew.
And celebrate they did. In only the truest of German manners.
Von Hentig and Pratap made friends with the Afghan ruler. Meanwhile, Afghan print media started stirring up anti-British sentiment. Months went by and negotiations continued. The war had started to cripple the Allies and Russia was on the verge of collapse after the "Great Retreat."
In December, Amir Habibullah Khan ordered the drafting of treaty of friendship to establish an agreement between Afghanistan and Germany. By April 1916, things were looking good for the Central Powers. The enemy was getting weaker and they were inches away from gaining a strategic ally. They would, of course, celebrate.
The details of the event are still hazy, but it's widely assumed that they got sh*tfaced once again — this time, in a Muslim country that strictly forbade alcohol. This turned into strong condemnation from Afghan leadership — even those who once supported their cause.
The Niedermayer–von Hentig Expedition was sent packing. Soon after, Persia was invaded by the Turks, which gave rise to a hard-line hatred of the Central Powers. As history shows, the Central Powers lost WWI. Amir Habibullah Khan was assassinated after the war's conclusion by an anti-British coup that lead into the Third Anglo-Afghan War — which was lost in spectacular fashion.
All of history as we know it may have been rewritten were it not for one fateful night.