Here is a description of the set from Beckett.com:
These 792 standard-size cards are parallel to the regular Topps issue. These cards were issued in special packs available only to service people serving in the Desert Shield (later to be Desert Storm) campaign. The cards are differentiated by a "Desert Shield" gold foil logo in the upper right corner. There were many different types of forgeries created for these cards so some caution is urged in purchasing any expensive cards from the set.
I remember picking up the Rickey Henderson and Dave Winfield cards in the mid 90s and being very excited about the additions. Recently I recognized that I didn't have any Giants from this set in my collection and decided I needed to pick up one or two. I did a search and found a seller on eBay who was breaking a set and put in bids of a dollar or two on all the Giants he was selling. I hoped and figured a small number would land in my lap.
Imagine my surprise when I won 14 different cards from the team set. This is just under half of the 29 card team set. I don't plan on going aggressively after the rest of the cards at this point but I have a great representation in my 1991 Giants binder.
Have a look: