20% Off Campaign Books from Osprey Publishing

Osprey Publishing is running a sale this month on all their Campaign books. You can get 20% off your order of either the physical version, or the eBook version from their webshop. This is in addition to any discount you get if you're a silver or gold member.
Along with that, they have their June books up for pre-order, including books on the SR71 Blackbird, Waterloo, Confederate and Union cavalry, and Spetsnaz soldiers.

From the announcement:

Get 20% off Campaign Books

Until the end of March you can get 20% off all of our Campaign books - as well as 20% off their eBook counterparts.

In addition to this, Gold and Silver members will have their own discounts added to this offer.

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