This is my current soldier build. I DON'T need to hear that Kithkin are better, just critique my deck.
Plains x22
Emeria, the Sky Ruin
Elite Vanguard x4
Veteran Armorsmith x4
Captain Of The Watch x2
Kazandu Blademaster x4
Knight of the White Orchid x4
Kor Aeronaut x4
Honor Of The Pure x4
Harm's Way x3
Path To
Exile x4
Conqueror's Pledge x2
Ajani Goldmane x2
That's it. Didn't want to post a sideboard but I tell you it's just a bunch of obvious stuff (Forge Tenders, Ethersworn Canonist as an example).
I made this deck while watching 300, so you can say there was
inspiration 
I know it's a little too light on Planeswalkers, but I just couldn't afford Elspeths...
On card choices:
Emeria just let's me put a dead guy back into play. Pretty nice.
The Vanguard is a pretty obvious choice, as it is the Armorsmith, the Captain and the other Captain, so I'm gonna skip those.
Reveillark gives me back my Armorsmith AND my Wardens or Vanguards, which is very useful.
Honor of the Pure (so 300), is also a pretty obvious choice.
Spectral Procession combos with Windbrisk Heights and Soul Warden, besides being a nice addition for an aggro deck.
Harm's Way is great against burn decks and also can be used as a nice combat trick (one of the best spells for White in M10).
Path to
Exile just exiles some dudes. Pretty handy.
Preferred Ajani instead of Elspeth because of his first abilities. Found them better.
So, as I said before, that's it. Critiques welcome