Oh ive had a few, heres 2:
Age of mythology: Basically was a custom map where each player controlled a floating island full of ressources and the map being a waterworld, you could only access other players islands via "rocs" (giant transport birds) and boats. It was a free for all with tons of diplomacy as players made agreements to gang up on a player and counter alliances were made.
Out of like what, 12 starting players it came down to 4. You had 2 buddies allied with each other and a single player who had been the most agressive and conquered 3 other players by himself.
Then you had me who had maintained neutrality with both those groups as i was in intense combat with another player for most of the game.
As i defeated that player, got invited by the 2 friends to join them to gang vs that solo player who had been most succesful. I accepted, knowing full well that those 2 players were gonna gang on me next (the solo player was solo to the end, never allied with anyone) and prepared my forces accordingly. I had picked Zeus as my primary god meaning i had acess to the finest infantry of that game: Myrmidons (if you saw Troy, think of Achilles bodyguards, those were myrmidons) and having conquered that other player, now had enough ressources to just build a ton of them, over 200 in fact (another thing to note about this map: unit limits were off). No siege, no cavalry (for island raiding whats the point?), no archers just pure myrmidons.
To build myrmidons i also had to build a few fortresses too (the most powerful defensive structure in the game and only one capable of producing units like myrmidons).
I sent a boat with 50 myrmidons on it to join the allied assault on that solo player, together with the 2 buddies combined forces of light infantry and cavalry we had easily 400 units making a landing on the beach, which would then get absolutely hammered by archers (the solo player picked the god that provided him with best archers in game) protected by a network of walls that solo player had been building up all game.
It was a very bloody battle, but the buddies siege units eventually punched holes through the walls for our combined forces to pour through and after an intense siege on the solo players capital city the player finally surrendered.
Then the 2 buddies immediately declared war on me and I saw a group of rocs just hidden beyond the clouds surge out and unload waves of cavalry and archers in what was the courtyard of my impromptu castle like setup of defences (cap city in middle, fortresses on the outside connected by a wall, only 1 gate to the beach) bypassing the beach.
I put all my fortesses to producing myrmidons constantly and set their rally flags in the courtyard and moved to initiate a counter attack of my own.
I had anticipated treachery so had by precaution also hidden 2 rocs in the clouds near the buddies islands (they were neighbors), each carrying 150 of Antiquitys finest mythological swordsmen and they made a straight line for the enemy islands.
Which were amazingly badly defended, completely lacking in defences and walls and only a few fortresses producing elite archers. They had built their islands as a mass recruiting ground to produce tons of cheap units. Except my units were friggin myrmidons and not unlike the Troy film once they landed on the beach they moved up the hills on both islands in tight formation before breaking ranks and butchering the much more numerous but totally outclassed enemy infantry and archers. Oh and I actually did have Achilles leading one of the assaults aswell ^^ The other island assault was lead by Ajax iirc.
Meanwhile the allied assault on my island was faltering, the siege units could barely fire off a salvo of rocks before being destroyed by fortress counter fire, and the landing infantry although numerous and reinforced with continual reinforcements, just landed to get butchered by myrmidons pouring out of their fortresses, and after 4 or so rocs worth of reinforcements, the last of the assaulters was slain.
By contrast the Myrmidons assault was still in full flow, the beaches had been won and fierce fighting was erupting outside the allied players respective capitals, myrmidons putting buildings to the torch to prevent them from producing more reinforcements.
Eventually the cities were razed and the invading myrmidons proceeded to wipe out the last survivors of the allied forces before raising their swords in victory, from each group of 150 myrmidons roughly 75 from each had fallen for the cost over 500 enemies.
Best age of mythology game i can remember

And that was enough of a tldr so will end it at that.