As an added bonus to the free Avatar prop, the prop does carry over to your Windows Phone Gaming Hub.
If you aren't familiar with or downloaded the Sales & Specials app on your Xbox 360 console, finding this section can be a bit of a challenge.
Go to the Games Section of your Xbox 360 Dashboard and click on "Browse Games". The Sales and Specials app is currently located in the upper right corner of the "Featured" page (the first section when you browse games). This morning Madden 13 was the featured game on the Sales and Special app.
Click on the Sales and Specials app, download it and go to the Chain Reaction section.
The Chain Reaction feature is a series of specials that are dependent on each other, get the first deal and your eligible for the next and the next and so on. The free bi-plane from the Toy Soldiers game is the first leg of the current Chain Reaction deal.
It sounds like a lot of work for a free toy airplane but it's a neat little avatar prop.
Thanks, Karl, for the tip!