I did nothing really crazy I think.
In 1 game me and my bud were in north and south america fighting 10 enemies (almost all the rest of the world). They used gold to scout our troops several times a day (if you catch 55 planes with your subs on the water, or a group of over 60 tanks, they take mesures). No military sabotage spies detected at that time and they posted some of their info in the newpaper, as well as their battleships opening fire on my invisible subs --> definately gold usage. Except for moving my naval units several times a day slightly to avoid them being caught all the time by enemy units, me and my ally also exchanged armies after he lost all his navy. He lost them very fast , but that also ment he was less likely to be explored with gold from then on. I gave him destroyers and subs to accompany his new battleships and he gave me sea bombers in return so we could both react with sea bombers and ships if we caught anyone landing.
Later on he develloped the nucleair superweapons. I didn't, but I supported with rare materials.
In another worldmapgame I was #1 as Romania. Yoegoslavia was my former ally, but now inactive. I only conquerred a part of his former territory, Greece, Albania and Yougoslavia. The rest of Western and Southern Europe was mainly controlled by South-Afrika, who was #2. A lot of players were planning an attack on me as I was quite superior to them in army, eco and size. I delayed D-day thanks to spies. I intercepted a message from #4, who was behind the conspiracy vs me telling another player about the troop locations of #2. While he wanted #2 to attack me. I informed #2 about it and he said he wasn't planning on invading me anymore. My military sabotage spies revealed troop loactions of #3 and #4 and I got some good kills. All the time I was moving an army From Eustern Europe to South east Asia to go to Benchuanaland, who was #3, by sea in order to invade and defeat one enemy. I couldn't go through the Suez canal, because I would be spotted by their ships. My military sabotage spies also told me that there was no navy near the south-eastern coast of Afrika or South-east Asia. I brought some subs through the Suez Canal to south-east Asia to accompany my men from there to Afrika.
South Afrika and I were both massing troops in Europe, since we didn't trust each other. If I could control the land of Benchuanaland I would be right next to the core provinces of South-Afrika and I could sort of hold them hostage to force him to retreat part of his units out of Central-Europe, while keeping other invaders out of western europe. Most players planning an attack on me would come from Afrika or the America's. I knew his armies were in South Amerika and in Europe, only few men in South-east Asia and Afrika itself, so military wise I could really pull this one of. Unfortunately he attacked me and I couldn't make him my puppet, but only send him on exile to South-Amerika and Oceania.

Love you, Diabolical!) where I am France. Communist Russia (Diabolical) was being attacked by Germany, who would very easily win if someone else didn't take action. So, I logged on and attacked Germany, taking much of his land by Day 1 of my offensive. However, come Day 2 of my offensive- Spain attacks me from the south, quickly overrunning my defences and taking Paris on Day 4 of my offensive. However, I'm not like a real-life WW2-era France, so I decide to fight on. With small amounts of provinces scattered around Europe, most of them in Poland and Ukraine, one Ajaccio and one Munich, and with Spain occupying all of the territory I occupied from Germany, and a very small army (11 units at most), I decide to be a weirdo tactician and just taunt Spain and Germany in a very odd way. This is an Elite AI map, so countries have opinions of me and they can be politically active, so I have right of way through most countries (I am the most liked leader in the world) and Share Map with Sweden, Tunisia, and Belgium. Now that we got background out of the way, I am using my special alliances to dart in and out of Spanish territory, staging raids on lightly fortified cities, using my infantry unit in Ajaccio to land in Spain and cause massive damage to Spain, all while my main armies of 6 and 5 units (so powerful!
) are doing the main work in conquering the big centres of production in Germany and France. So, summed up, I am using small armies to fake out Spain and using my big armies to do the heavy lifting (not defending any provinces, because if a province rebels to another country instead of Spain, that is even better for me!). Spain is pretty easy to trick, so I plan on continuing my tactic until I can centralise my armies and attack and defeat Spain once and for all. Look, I think I have a picture here: