This was an idea that I played around with a year or two ago, then forgot about when I couldn’t make it work. Today I tried it again. The strategy utilizes three of the Burmese bonuses to work properly, making it basically only possible with them without extreme luck. Here’s how it ideally goes:
To start with, build two houses like usual. Send the sheep to the TC like usual, but instead of sending all three villagers to the sheep after the houses, send only one, queuing five villagers to the sheep. Send the other two villagers to build a Barracks after the houses, then send them to straggler trees.
At the same time, use the Relic locations to quickly locate the opponent as soon as possible, while queuing up three Militia. Create villagers and send them to wood or gold as needed.
Once you’ve located the opponent, attack them with the Militia. If you encounter more resistance than wanted, wait until the Feudal Age and then attack them again. Alternatively, you could also wait until the Feudal Age hits for them to arrive, but then you lose the element of surprise. Either way, they gain extra attack in Feudal, making them more dangerous. If villagers are still on straggler trees at this time, they gain the Lumber Camp upgrades for free.
After the initial attack, you can choose to continue with the all-in infantry aggression, or simply sit back and take a more relaxed approach, doing whatever strategy afterwards.
If executed correctly, you can tell exactly where the opponent is right off the bat, can attack them with infantry very quickly, and said infantry becomes extra powerful after reaching Feudal, making them more dangerous. Probably the only other civs that could pull off a similar strategy would be the Vietnamese or Magyars, but skipping the Lumber Camp in Dark Age is a bad idea for them.
Anyway, I think this strategy can be optimized and improved until the Burmese become the next Sicilians.