Ljubljana, September 23rd, 1940
The Italian army entered the city. Even fully mobilised the Yugoslav 7th army would had been outnumbered seven to one by the Italians. With all three of its assigned divisions still being mobilized it was not able to offer anything but token resistance. The Italians kept steadily advancing hampered more by supplies and transport than the still mobilizing Yugoslavs. What would happen when the Yugoslav mobilization was complete? That was a different question.
Kosovo and Montenegro, September 27th, 1940
The Invasion of the Italian 7th army had been stopped cold by the Yugoslav 3rd army which had even counterattacked and pushed the Italians back into Albania. Two out of four Yugoslav divisions in the 3rd army were still mobilizing when the war start, but against 150,000 Italians the odds were rather more manageable than in the north. And perhaps the fact that the 3rd army did not have a mostly Serb officer corps imposed upon Croatian and Slovene soldiery that for the past 20 years had had no reason to trust Belgrade was playing a role too.
Sidi Barrani, September 30th, 1940
The Italian invasion of Egypt had halted on its own two weeks earlier. Italian engineers were fast at work extending the Via Balbia into Egypt and Rome was receiving increasingly strenuous requests from Italo Balbo to reinforce Libya particularly with aircraft, tanks and motor transport but the engineers needed time while the reinforcements kept prioritizing Yugoslavia.
Zagreb, September 30th, 1940
The Italian army entered the city, to a somewhat mixed welcome by the Croatian population. The same day, the Italians long time puppet Ante Pavelic had proclaimed Croatia's independence from Yugoslavia. But the antipathy towards Belgrade was at least somewhat balanced over well founded suspicion of Italian claims on Dalmatia. For now at least the former was winning out, recent Serb concessions to Croatians had come too late following Alexander's dictatorsip and large numbers of Croatian reservists had just failed to show up, or had thrown down their arms and surrendered. Some, initially not many, had even outright switched sides outright. Heavy handed attempts by the mostly Serb high command to reverse this using loyal Serb units to enforce discipline and executing deserters had backfired leading whole Croatian units to mutiny against their Serb officers. Besides the Italians were winning. When faced with two evils why should someone put himself and his nation on the side of the losing one?
Budapest, October 3rd, 1940
Miklos Horthy, signed the order for the general mobilization of the Hungarian army. Yugoslavian resistance had notably stiffened in the last few days as the Italians had entered Bosnia but the Yugoslav first army group had been destroyed. The Yugoslavs had managed by now to establish a more of less contiguous front with their 2nd army and the general headquarters reserve that somewhat fortuitously as things had turned had been massed in Bosnia but that had meant stripping the Hungarian border of troops, while according to Hungarian intelligence the Italians still seriously outnumbered their opponent.
Ploesti, October 7th, 1940
German troops entered Romania to protect the oilfields. Italy had not been informed. Mussolini was not amused at the encroachment of what was considered by the Italians their own sphere of influence. The general staff was instructed to prepare for the conquest of Greece. Of course even Mussolini realized that Yugoslavia had to be finished off first.
Vojvodina, October 18th, 1940
In the past two weeks, the Italian advance into Yugoslavia had notably slowed, or in some cases stopped altogether as the Yugoslav mobilization had completed and the Italian advance had extended their lines of communication. The most notable loss had been Split, thanks to no small extend by Italian naval support. But now the Hungarian 2nd and 3rd armies crossed the border, bringing another half a million men into the fight...
Belgrade, October 24th, 1940
Italian and Hungarian troops entered the Yugoslav capital. Holding back the Hungarians as well as the Italians had proven too much for the Yugoslav army who was by now in full retreat although it retained its cohesion, not least thanks to the Yugoslav air force still holding her own. So far allied support to the Yugoslav war effort had been limited to a French fighter group from Constantinople that had been allowed by the Greeks to cross into Yugoslavia, and munitions shipped north from Thessaloniki.
Sofia, October 24th, 1940
King Boris had been so far reluctant to join the war. But if Yugoslavia was coming down, this was the time for Bulgaria to liberate her brethren in the west. Two times in 1913 and 1915-18, Bulgaria had tried, spending rivers of blood only to fail. Boris had no intention to see his country losing men again to no avail. But what better opportunity would even present itself with Bulgaria's allies dominating the continent, Russia allied to Germany and Yugoslavia already on its knees? And if the war extended to Greece... again what better opportunity to see the whole of Macedonia and Thrace finally liberated by the Bulgarian army? The general mobilization of the Bulgarian army was proclaimed.
Athens, October 25th, 1940
With Bulgaria mobilizing it was inevitable that Greece should also mobilize. Should it also join the war or hope, that the Italians after destroying Yugoslavia would leave it alone? Greece was already helping Yugoslavia in every possible way short of war. What were the chances that when the Yugoslav army retreated past the Greek border as it seemed entirely too likely to happen at the moment the Italians would not follow them over the border? The last thing Dragoumis intended to see was Greece turned into a battleground while he was watching idle as Constantine had done in 1915. But the stakes at hand were too big to be taken idly...
Sarajevo, October 26th, 1940
The Italians entered the city, destroying any remaining hopes the Yugoslav general staff might hold for a Bosnian redoubt. The only option left was retreating south and a renewed Macedonian front. But with a quarter million Italian soldiers in Albania, the only line of retread was down the Vardar which as it had been seen in 1915 was vulnerable to the Bulgarians. If at least a sliver of the national territory and the army were to be saved, Yugoslavia needed the Greeks to fend off Bulgaria. But the Greeks were understandably reluctant, particularly Dragoumis. The Yugoslav ambassador in Athens was ordered to repeat the 1915 order to cede Monastir to Greece if it joined the war. After all this was an offer likely to affect Dragoumis, with his background in the Macedonian struggle and who had publicly deplored the fate of the Greek-Vlach community in the town under Serb rule, more than it would ever affect the judgement of someone like Venizelos.
Rome, October 28th, 1940
There had been some reluctance in the Commando Supremo, but in the end it had been Mussolini's opinion that mattered. With Yugoslavia going down the Greeks would be given given the option to either cut off the Yugoslavs and make concessions to Italy and her allies or be invaded in turn. After all Italy had no reason to tolerate any more Greek support for the allies and the Yugoslavs. The 7th army was ordered to shift it's divisions to the Greek border, keeping on the defensive in the Yugoslav front, to be ready for the coming ultimatum.
Tirana, November 1st, 1940
The clerk did not quite know what a dead drop was. He just threw to the garbage a few copies of papers that should never find themselves in a garbage can as he had been told. The Albanian cleaner took out the garbage and he got his money. If the British wanted to pay for information about the army in Albania and its movements it was ok by him, it was not as if he could see how it was really useful to them. The DYPL [1] agent that actually run the operation might have a different opinion of course, Athens would very much want to know that the Italian 7th army was shifting to the Greek border "to support a final solution of the issues with Greece". His agency had been a relatively recent creation, Dragoumis when coming to power had taken the General State Security agency established back in 1926, had created out of it DYPL and DYEA [2] to handle intelligence and counter-intelligence respectively, but was very well funded and had inherited a pretty extensive information network in the Balkans. Pragmatically the Greek government did know its turn was coming. But proof hardly hurt...
Yugoslavia, November 6th, 1940
The Italian army captured Nis and reached the Bulgarian border at Vidin. It was the signal Bulgaria waited to invade Yugoslavia in turn. From then on events had moved with breakneck speed. Within hours first Yugoslavia had announced it was ceding the town of Monastir to Greece, then the Greek ambassador in Sofia had informed the Bulgarians that Greece was treaty bound to defend Yugoslavia in case of Bulgarian invasion, the Greek 1st and 2nd Cavalry divisions were already rushing north for Stip with four infantry divisions of the Greek C Army Corps following behind to close the approaches to Strumica to the Bulgarians. War had not been quite declared... yet. After all the Greeks might back down. Or the Italians stop and let a rump Yugoslavia north of the Greek border survive.
Athens, November 7th, 1940
Benito Mussolini had had enough with the Greeks over the last 18 years. His plan had been to clear the situation in a couple weeks when his army finished the conquest of Yugoslavia. The Greeks had not proven so accommodating and had rushed things. So be it. As he'd told his generals when questioning the prudence of an immediate invasion of Greece he'd rather be a Greek than an Italian fearing Greeks. Gracchi delivered the Italian ultimatum to Greece before dawn...
Appendix, Selected terms of Italian ultimatum to Greece November 7th, 1940
- Greece to immediately demobilize her army, navy and air force under Italian supervision
- Greece to seal her border with Yugoslavia
- Greece to allow Italian and Bulgarian troops to enter the country and occupy strategically important points
- Greece to begin negotiations under Italian mediation with the Bulgarian and Turkish governments over the return to them of territories taken over by Greece after WW1.
[1] Information Agency Directorate, Διεύθυνση Υπηρεσίας Πληροφοριών / Dieuthynsi Ypiresias Pliroforion in Greek.
[2] National Security Agency Directorate, Διεύθυνση Υπηρεσίας Εθνικής Ασφαλείας / Dieuthynsi Ypiresias Ethnikis Asfaleias