Amazing! What kind of composition and strategy did you use? Also, if you play until 42, it would be interesting to see if the Soviets do their auto declaration of war still. Would be a fun round 2 to try!
When I played as France and took out the Axis powers before 1942, the Soviets did declare war on Poland. However, as long as Germany has not been conquered, then the Soviets will not declare war on Poland (Not sure if it changes if the other Axis members are still alive) I'm still officially at war, because the other Axis members (Italy and Japan) are alive. When I played as France, I built strategic bombers and nukes, and dropped them on Moscow, and then they surrendered. I assume that as Poland, I could do the same. It would be pretty boring I assume. XD (I'm worn out from both my France campaign and trying to beat this Polish challenge that I'm going to pass for the time being).
So, I tried nearly a dozen attempts trying to figure out a way to win. The way I tried to win is very simple, but it worked.
On Jan 1st I change the political leaders (1.) I have the minister in charge that increase my political leadership, and (2.) I have the minster that increases attack reinforcement. I delete all MTN, CAV, ships, airforce, and I delete all commands except for one Theater and attach all my 111 inf brigade to it. I also have all my units move back to Warsaw. Next, I have the Field Marshal have the highest level with old guard and logistics wizard. I pick Old Guard as he isn't going to gain as much experience anyway, and I need as many experienced generals with traits as possible to overcome Germany's better generals. Next, I put all my leadership points into espionage and change the priority to increase the national unity of Poland. The reason I do that is that I've had bad luck in which my national unity dropped below 70%, and I couldn't change my law to something better. I put all my IC into production except the bare minimum into consumer goods so dissent doesn't increase. Pretty much, none of my units get supplies, upgrades, or reinforcements. I also click on the HQ theater and change it so it will not be reinforced from here on, even when the rest of my units will be reinforced when I mobilize. Finally, I put 15 infantry brigades and a handful of ATs into my production queue (I want just enough IC into produce units as I can, but not too many as it involves a research trick. I do infantry and ATs first, as their cost to upgrade is far less than ART). My main goal is to produce an army size of 62 divisions that are inf+inf+art+at. Anyone who has played as Poland should be calling foul on this, as Poland doesn't produce enough manpower, even at three-year-draft, to fill out 62 divisions of inf+inf+art+at, but I will explain that later when I talk about research. As I mentioned before, there is a research trick. Pretty much, it takes 84 days for inf, art, and at to upgrade. Normally, I would do 62 art, 62 at, and 15 inf in that order. The reason is that art takes so much IC to produce unlike art and inf. However, it also costs a lot to upgrade art compared to inf and at.
0.10 (inf with one tech). .40 with 4 tech. .66 tech increase for art. .39 for at.
40.92 IC for Art (62), 12.4 IC for Inf (124), 24.18 IC (62)
Pretty much, researching a single tech of art and upgrading it all the way to current tech takes a lot of IC and time (IC cost does go down when you upgrade to the next time, but it doesn't appear to change the speed at which you upgrade). My trick involved putting inf, at, and art into my production queue, and when I researched something, any unit that is currently not being produced would be removed from the queue, and then put back in. By doing that trick, all the new units I put into the queue would be at the current tech level without me having to spend IC to upgrade them. I would have to spend IC to upgrade them for future tech and wait 84 days for them to acquire this new tech, but it would help decrease IC usage and time.
After that, I then speed up the game until I reach Jan 2nd, 1936. On this day, I go to the trading section of the game, and sell fuel to the nation's with the highest income who lack fuel. Jan 2nd of 1936 is the only day, as far as I'm aware, in which you can do it. Usually it is the USA and UK who have the most money and need fuel or USA and the Soviet Union. Either way, I sell 23 fuel to the USA and 7 fuel to either UK or the USSR. The reason I sell 30 total fuel is that Poland will produce a max of 30 fuel per day. With so much income coming in, by Jan 3rd, 1936, I can change my industry law to the lowest law, which decreases my industry. By decreasing my industry I'm able to trigger the "prepare for war" event and start decreasing my neutrality. After that, I keep a close eye on how many spies are being produced, my income, and my neutrality. When I have 10 spies in espionage, I then put all my leadership into research. I research education, agriculture, 4 infantry techs, the radio tech tree (I have to research 3 radio techs, and once I do, my units get radios. With radios, it improves my combat by 10.0%), both AT and ART techs, the doctrines which increase org and morales for INF, ART, and AT, and I research the land doctrine that decreases the times between my attacks. I don't have enough leadership to research them all, so I focus on education, agriculture, the 4 infantry techs, radio, both AT and ART techs, and one of the land doctrines I've mentioned. Once my tech upgrades past 1936, I then focus on my other techs that I have listed. Normally researching education and agriculture isn't a good idea for a nation like Poland as the return isn't that great compared to a major nation like Germany. However, I'm going to need all the juice I can get out of Poland, so I figure getting a little extra in leadership and manpower might just be enough (by the time it is 1939, my leadership is 10.44 and my manpower is 5.3 per month) If my neutrality is low enough, I switch to the best law (so I'm in diplomacy and the moment it drops below 70 neutrality, I switch to the best law I can). If my neutrality isn't low enough at this time, I change my training law to minimum and change from state press to free press. The reason I changed the training law to minimum, even though I'm going for three-year-draft, has to do with the fact that units without supply, will decrease in size. Normally, using three-year-draft, minimum training, and then switching to mobilizing and specialist training isn't a good idea. However, by the time I mobilize most of my troops in 1939, they will be in similar size to troops produced with volunteer law. So most of my units will be around 13.33% experienced when I switch over to specialist training and I mobilizing them in 1939.
So, pretty much, I have my game plan in place from Jan 1st, 1936 to the middle of 1938 or whenever I have finished producing all my units. I don't trade with other nations unless they send me a request to trade, as that helps free up my leadership instead of being tied down to diplomacy. Whenever I have leadership left over, and all my techs are for the next or the following year, I put my leadership into officers so I can increase my officer ratio. My goal is 140% officer ratio, which I will achieve on August 31, 1939. Normally I don't overlevel. However, based on tests I've done, there are two techs that I can overlevel, and that's ART and AT. The reason I can overlevel them, at least when it comes to them going from 1940 to 1942 tech, is that I produce so much ART and AT and they both count as the same practicals, that I can research the tech well below 1939 is over. However, I don't overlevel them until I know it will not delay increasing my officer ratio to 140%. The German AI never reaches 140%, so reaching that gives me a leg up against Germany. Around 1938 I start overleving them, once I have spare leadership left over to overlevel them. In 1938, I also research one level for combat medicine and first aid. The percent is small, but given I'm dealing with margins, I'm going to need all I can get. In my run, I was able to get them around June of 1939 and start putting some of my IC into upgrading my units. By the summer or fall of 1938, I should have built all my units at this point, so I put the IC I have left into upgrading my units. In November of 1938, the current party of OZN should lose to the Social Conservative Party. I have to change my ministers again afterwards. I change the minister to decrease consumer goods IC by -2.5% during both peacetime and war, I have the minister that increases leadership, and I put in place the minister that increases the attack reinforcement. In Jan 1st, 1939, is when I switch my training law over to specialist, move my troops to my border with Germany and Czech (soon to be Slovakia and puppet to Germany), put IC into supplies, and start reinforcing my units...but I don't mobilize just yet! The reason I do this is that if I have no troops along my border and my troops aren't supplied by March of 1939, then Germany will declare war on me or the Allies. It screws up the game. I reinforcement my units so it cuts down on time and IC to mobilizing my units. The Allies do other to join the Allies in March of 1939. I do decide to join, but I didn't join on one test and I still joined the Allies when Germany declared war on me. In all future tests, I decide to join the Allies on March of 1939, to ensure it doesn't screw with the game in some way. My consumer goods does go up when I join the Allies, but because I have -2.5% on consumer goods during peacetime, it isn't that bad. I have about 6.67 IC in consumer goods during this time. I also put all the Generals that have logistical wizard into my army to decrease the amount of supplies I need to produce.
After I've overleveled on ART, AT, have one level of tech on both combat medicine and first aid, along with radios, inf tech at 1940, and all my land doctrines at 1940, I put the remain leadership I have into officer ratio. I should be gaining about 52.2 officers per day with my setup. I need 34,860 officers (including 100 officers for the HQ) to reach 140%. In July of 1939, I mobilizing my units. I put all my IC into mobilizing them, except consumer goods and supplies...unless I have excess supplies that I can afford to lose supplies for a least a month. I do it in July of 1939 as there have been times in which the IC needed to mobilizing my army at max strength is larger than the IC I have, so doing it in advance ensures my units will be fully strengthen by September 1st, 1939. I won't have enough manpower at this time for my units to be at full strength, by September 1st, 1939, I will have an extra 6 manpower in my pocket. IC use will drop off quickly, and I then put the rest into upgrading my units and some into supplies (again, if I can afford it). It would take until sometime in October of 1939 or even until November of 1939 for my divisions to fully upgrade.
Around August of 1939, I change my generals. Now, before I get into changing generals, I will state how I used to do things.
I used to put two divisions per province in the center and southern border of Germany and Slovakia. Pretty much, I would concede land to the Germans and Slovakians, for protection beyond a river (except the land near Slovakia as Germany doesn't deploy enough troops to breakthrough nor attempts an attack near that section of the front). The Germans didn't attack when I had this formation setup, and when they did, I was able to retreat in good order and launch a counterattack to regain the lost province (So, there would be Province A, and Province A borders both Province B and C, which are beyond it and away from the Germans. When the Germans occupy Province A, I'm able to attack from both Province B and C, and regard it). I also used to put one division on Danzig, and keep putting one division as I went around East Prussia, and then switch to 3 divisions once my units weren't behind the river. Finally, I would put 5 divisions in three provinces that are in the top north and west of my border with Germany (pretty much, the province that is to the left of Danzig that border the sea, and the two other provinces directly below it).
Normally, I would have my troops along Eastern Prussia to push through as quickly as they could across the plains and forest (I would avoid attacking across forts and rivers unless the unit was attempt to break out of an encirclement or to pin them in place from escaping). In the meantime, I would use those 5 stacks of units I mentioned before, and I would push westward as quickly as I could (I would attack with 4 divisions to avoid the overstacking penalty, and then a division on either of the provinces would then send one division as support, so I can defeat the German divisions on the province. There has been times in which the Germans send their battlecruisers to provide shore bombardments, so be warned!) By the time my troops reached the river Oder (the river that is near Berlin), I have defeated the divisions in East Prussia and I rushed my divisions to the west as soon as possible to reinforce the attack. However, by the time I rushed by units from East Prussia to Oder River, the momentum has been lost. The Germans were able to reinforce their position behind the Oder River, and I couldn't break through. I needed more troops, because the fighting from East to West had weaken my divisions strength and org, that they were too weak to break through. I could make good time and reach the river Oder by September 23rd of 1939, and crush the remain German divisions in the East Prussia during that time, but it didn't make a difference. I tried sending over some divisions that weren't needed to finish off East Prussia a little sooner, but that only produced marginal benefits, but not the goal of surrounding and holding Berlin itself. I even tried splitting the divisions and sending some to the Westward push after East Prussia fell, and sending troops down south to attack a salient that formed when I conceded land to the Germans. The latter produced better results, as I did encircle more German units, but I was on a strict time limit. In March of 1940, Germany would produce heavy tank, and by April 1st in 1940, its org would be at 100%. Germany producing a heavy tank was game over for me.
So I decided to change things up this time. I decided to, at the last minute, go with a different plan. I decided to do what I suggested should've been done to surround Berlin. I wanted to crush the German divisions in East Prussia, as it would free up units against Germany, and I wasn't confident my units could fight them 1:1, as I saw success against the Germans when I was attacking them at least 4:1 or even 4:2. However, after nearly a dozen attempts, I couldn't think of any other options at this point. I figured that if this didn't work, then it was simply beyond my ability.
So this is what I did to win. I would still concede land to the Germans, and I would still have units on each province bordering East Prussia. However, I created a thin defence. The South and Center would have only one division, that division would have a general with the defensive trait, they wouldn't be reinforced if they lost troops over the course of the war, and they were to fight into they were forced to retreat. In the North, I would also have a thin defensive thin surrounding East Prussia. Again, I would only have one division per province, each division would get a general with the defensive trait, and they wouldn't get reinforced if they lost troops. The reason I did this is that I needed all the manpower I needed for my push westward. With all my freed up units, I put them in the three provinces and put divisions in a fourth province directly below that one. These divisions would have the best generals without the old guard trait. First, I would give them generals that had high level and offensive as their trait, then I would look into Battlemaster, Engineer, and finally Fortbuster. Finally, I would give them generals who had the highest level and a trait (so defensive or logistics wizard, usually). These divisions would be prioritized for upgrades. Finally, I requested the Allies to send troops to Danzig. My army was prepared for war.
When Germany triggered the "Danzig or War" event, I clicked to accept war. I then attacked West. I would have 4 divisions attack a German division, and then have 4 divisions support that attack. I rushed westward as fast as I could. As I advanced, I put down two divisions along the southern river (I think it connects to the Oder River) to prevent the Germans from stopping my advance. I would also do my best to avoid over stacking and synchronizing the marching of my units so they would all appear at the same location at the same time, to prevent the Germans from recapturing the province. With so many units, and the speed of my attack, I was able to cross the river Oder with plenty of divisions that were strengthened and had nearly full org. I quickly tried going to surround Berlin, but I had to attack on a long right hook so I could punch through. The provinces directly to the bottom and left of Berlin were captured left, as Germans had divisions there to prevent the encirclement of their capital. I remember the Germans attacking to breakout of the encirclement, with the percent being pretty high, but as my org was high still, I was able to bring divisions up to attack into Berlin and more divisions were sent to reinforce the divisions currently under attack. After their breakout failed, I quickly pushed outward to establish two rings of defensives around Berlin, to prevent the Germans from simply connecting only one province, and reconnecting the supply line to the rest of the German army. My memory of all the steps are a blur, but I have a save file on October 17th of 1939 for when I surrounded Berlin with two rings of defensives. I did push a bit westward still, as there were some German divisions there that were attacking me, and I had to attack into Berlin whenever Germany deployed a divisions, but be careful not to actually take Berlin.
In the East, when Polish land was, German divisions in East Prussia weren't attacking the thin defense, but the German divisions that were in the South and Center were. I didn't pay attention too closely to the East, as I was micromaning the attack in the West, but the Germans did push deep into Polish land. I did keep two divisions on Danzig as I was unsure if that would hold, but as the Germans got closer to Warsaw, I quickly moved them down to protect it. As I wasn't playing too closely to the fighting, A decent portion of my Polish army was cut off and surrounded. I was able to retreat back two Polish divisions to Warsaw, to strengthen its defense. As I had been increasing my national unity since day 1, I would have to lose all my victory points before I would surrender to the Germans. The provinces that connected my supplies to my troops in Germany were so thin, that the Germans only needed to capture one province, and I would be out of supplies too! It would create this funny picture of both Polish and German armies being out of supplies, and forever being in stalemate, unable to finish the other one off. However, I attacked with the divisions I did have over there, and I prevented the Germans from cutting off the only province connecting Warsaw to the rest of my army. I did tag over to Germany a few times to see the condition of their supplies. In late October, supply issues were minor; On November 17th, supply issues were worst, but some units still had supply from local areas (this was true for German units that were bordering the French); by December almost all German troops lacked supplies and were losing org; by Jan of 1940, their org was nothing and French troops were now advancing into Germany. I sat back as Poland and watched as the French marched into Germany with little resistance. As Poland, I captured the port near Denmark that had a victory point, and then, once all other victory points had been captured, I captured Berlin. With that, Germany was finished. At some point Hungary was in the war, as Germany was defeated, their troops were cut off and quickly destroyed. French and Polish troops punched on Slokvia, and their surrendered, and by July 30th, 1940, Hungary surrendered too. Thus, bringing this challenge to a close.