USA - Jack of all trades, masters of some, best pick and mix army in the game in my opinnion, the only thing theyy lack is atgm infantry unit, it has the best tank m1a2 in game, most versatile air force, bloody longbow and old good unicorns known as ATACMS(the unit that has delete button instead of fire position), Patriot that is has 70% acc and by far the longest range in game. People mostly dislike it's infantry, but truth to be told they are can get the job done, but do not expect Hollywood miracles, though you do get fire support unit SMAW which is, in my opinion, the best of its kind in game (use it against infantry, it eats their morale faster than pacman eats yellow balls).
Unit that I like the most: Hornets, Apache helicopter line, CEV tank.
NORAD - imagine it as the USA with wider air force options and much better infantry options, plus you can get Lepoard mexas tanks, and those are always nice. +ADATS & usually overlooked Chimeras. Airborne deck is what I like to pull off (go go Canadian rifles and highlanders!!! ) Unit that I like the most: Mexas, Canadians and all that I've already listed from Americans.
Commonwealth - Pretty, pretty good AA net especially for stopping helicopters, you get stormer and adats that can shoot at every vehicle, tanks that just kick ass and have a lot of armor on them, infantry is very nice too, at the moment one of my favorite coalitions in the game. I love going armored with it, since I think that you get the best AA units in the game for a armored deck armored variant, also I had interesting success going airborne.
Unit that I like the most: Tanks, SAS, durable transports, SASR, 90 point Jaguar ATGM variant.
Scandinavia - masters of infantry, their transports also kick ass, fastest shooting arty in game, cool twist on mortars with amos, they lack a superheavy tank, helis are uninteresting, pretty solid AA, and I also love to experiment with their airplanes, plus they have best cluster bomber in game. +my most favorite unit in the game - Ottomatic. -mechanized,
Unit that I like the most: FSK, FSK, FSK, Amos, Ottomatic.
Eurocorps - I like to look at them as agresive and bit more mobile commonwealth. Aka - you switch challenghers for lepoards and you get rapid fire leclerc. France has the glass cannon tanks, Germany has the MVP Leopards. Also you get (in my oppinion) best ASAF in game - the Rafale and most fun helicopter unit in the game - Puma 330H Cassiopee. Airborne, armored, mechanized, you name it - you can pull it off.
Unit that I like the most CassiOP, Legion '90, Leopards, Ceasar.
Dutch-Germans - You get Eurocorps, ditch the french stuff and get even more Leopards. You also get Stormtroopers and how cool is that + the mighty LANCE. I go armored on them
Unit that I like the most: just add recon tank to the list.
Landjut - I don't see a lot of people playing this, me personally I like the deck since it has the ottomattic. Basically it empovers Germans with wider infantry and AA choices and airplanes.
Unit that I like the most: Ottomagic and spec ops combo you can do.
Blue Dragons - They are pretty much Ying Yang, their stuff either sucks or kicks ass, you love them or you do not play them. Unit that I like the most: Kentucky Fried Chicken ASAFSEAD, Grenade launcher tank.
Israel - Mechanized kicks ass, airforce kicks ass, they lack AA, tanks are very, very solid. Well they are only nation in the game that never ever had a coalition with anyone, they are that solid. Did I mention that they also get tanks as a inf transport, vehicle that has armor like a tank for a vehicle transport, and fastest traveling antivehicle rockets that pack a punch. Big punch. Goliath is down kind of punch.
Unit that I like the most: Azcharit, Barak Obama 2, lar-160.
USSR - the ultimate jack of all trades, they only lack the stuff that did not made it into the game, cannot go wrong with them. Great arty, very very good AA net, Spetznaz and VDV combo, BMPT, they are preety much play the way you imagine them to play.
Unit that I like the most: KA-50, Uragan, T-62-MV1
East Block - My favorite red infantry, very solid airplanes if you know to fly them, durable, but not very precise helicopters, Basically if Wargame was a fighting game on arcade machine they would be that guy that has all the stats right in the middle. They are the definition in this game of "Jack of all trades, but the masters of none". S-O-L-I-D.
Unit that I like the most: Komandosi, T55 Dyna, T-72 Moderna, Strop 2
Entente - What is crazier than one slavic group? Two slavic groups combined! So with this west/south Slav combo. In a one sentence - not a single thing in the kitchen gets thrown away. You get a couple of interesting cheapish unusual units, very, very, very good AA net, bloody solid tanks (keep in mind though that the middle class tanks will get chewed up by leopards), the mighty m84AN recon tank. The things they lack are uber helicopters uber bombers and uber SEAD. The infantry is very good (piece of advice, mix up Padobranci and Padobranci 90 for best elite effect).
Unit that I like the most: L-17K, Spat BOV 30, Granatomet, Plamen, m84AN
Red Dragons - need a buff. Though you can overcome your enemies, especially in the armor department, with the overwhelming numbers of your very cheap but very powerfull glass cannon tanks. You also get to strap weak AA rockets to everything. Also if you have the guts - use North Korean MiG 29, you can do wonders with it.
Unit that I like the most: Anything that has Strela strapped to its forehead.
Baltic Front - Redfor masters of infantry, glass canon tanks, not so good airforce, not so good helicopters, though support units are nice, very flavorish nation if you get the hang of it.
Unit that I like the most: Bushmaster 2 cannon, Finnish MiG 21, Polish MiG 29, Finnish t55 recon tank.
From my side of view, if I would be forced to rank it for how they suit me when I wanna play to win it would be:
5. E. Blok/Baltic
From my side of view if I would rank it by how much fun am I having:
8. E. Blok.
That would be it if you have any questions or deeper analysis of something feel free to ask