Disney has been doing this for years and I think its a wonderful treat (not because I am an army brat/wife!lol)!
Here is the information and I am hoping they'll continue to do this every year so I can take the kiddos when they get older.
From Mouse Misers:
Walt Disney World has just introduced a special Armed Forces Salute Ticket for 2009. Each qualifying Military Service member* will receive a complimentary 5-Day “Disney’s Armed Forces Salute Ticket” with Park Hopper and Water Park Fun & More Options included. To receive the FREE ticket, visit any theme park Guest Relations window and show proper ID.
In addition to the free Armed Forces Salute Ticket, up to 5 of their guests can purchase for $99 a Disney’s Armed Forces Salute Companion (5 Day Base) ticket. Park Hopper or Water Park Fun & More option are available for $25 each (which is 50% off the normal price). Companion tickets may be upgraded to Premium, Annual or Seasonal Passes. Seasonal Pass upgrade requires proof of Florida Residency. Companion tickets may not be upgraded by adding the no expiration option, and you cannot add additional days to the passes.
Companion tickets may be purchased at any Disney World ticket window or guest services. You may also purchase tickets at Shades of Green, located at Walt Disney World or on your base (these two options are tax-free). If you purchase the tickets at Shades of Green or on base, you will receive a voucher that you will trade in once you arrive at a Walt Disney World ticket window.
Armed Forces Salute tickets will expire on 12/23/09 and have no block-out dates. Tickets may be upgraded anytime between January 4th -December 23, 2009 as long as there is usage left on the ticket.
The entire party needs to be present for purchase (Spouse or military dependents can receive the companion discount without the military service member being present as long as they have their military ID). The military service member will need to show ID; Cast Member will ask for their Base’s name, and the State where the base is listed.This offer is only available once per service member.
*This offer is available to anyone on active duty in the US Army, Navy, Air Force, Marines, Coast Guard, National Guard or Reserve, and retired military. Activated members of the National Guard and Reservists must present active duty orders in addition to valid military ID. You must have been active for any length of time between 1/1/08 and 12/23/09. Dept of Defense (CIA, FBI, Secret Service) and Coalition Forces are excluded.