The object of this strat is to utilize Russia's cheap units in such a way so that they cover each other's weaknesses. It's reasonably fast and somewhat strong, but the real power comes from its ability to attack with good force in Colonial while not leaving your eco in a shambles, and countering many traditional unit combos in found in Colonial.
Here'a a real loose build order-
That's the essence of it. So far I managed to beat a Major playing Dutch (I am a Master Sargeant) today with this. He weant grens/pikes and I countered with cossacks and strelets. He actually was able to sneak around and destroy my main base, but my forward base was so built up by then it didn't make much difference.
Do a standard 17 vill Discovery. 1 house, all on food, during age up put 7 or 8 vills on wood and forward build a Blockhouse about a little more than halfway between you and the enemy. Your Explorer should be finding treasures (food or wood is good if you can get it) and scouting the enemy. Send one card only. the chioce is up to you- if it's a treasure heavy map, go with Polar Explorer. Otherwise, I like the 10% faster food gathering card or 300 food. Age up with the Quartermaster.
This is where the fun begins. Immediately, you have another card choice. You can make another batch of vills and send Fencing School, or send 13 Strelets to your blockhouse. Build house and start cranking out vills- you could wind up with as many as 50 here in Colonial eventually. You will want a Market, for the eco upgrades, and a Stable up near your Blockhouse. Make 10 Strelets. Now you have a choice- there will be combat soon. You can wait for the enemy to come to you at your forward base, or send the first 23 Strelets into his base instead. I prefer to go on the offensive. The attack will probably be beaten back, but you can see what he's making and maybe stop his eco for a little while. After the battle, you want to start sending vils onto coin. Make sure you have enough on food and gold, with a little less on wood. Research the market upgrades. Establishing a trade route is awesome. Now, you want to send the 5 Cossacks card. Also start training more strelets, musks, and a few Cossacks. The ratio you build depends on what the enemy is making- if it's, say, pikes and grens, make lots of Cossacks and a bunch of strelets, with few Musks. The key here is that your 3 units cover each other- the Strelets kill the heavy infantry, Cossacks kill grens and light infantry (also artillery if your opponent reached Fortress), and the musks counter light cav. You most likely won't see any heavy cav. Keep pushing with your counter forces. You'll want to be sending Boyars, Riding School, and 700 coin/600 food. Eventually you'll be able to get to Fortress, as if you did it right you should have plenty of map control and a decent eco. Once in Fortress send the Fort to bolster your forward base, and have your Explorer build a TC there too. You can eventually ship more units like falcs and opris for strength and raiding. If you did it all right you should be able to keep pushing the enemy back until you can level his town.
Feel free to critique. I'm hoping this will be boosted by the cheap Stable and +5 pop to BH in 1.08.