That's a crying shame! I hear Sig is going to do a $300 rebate in a week or so. And, Glock has LEO/military discount of about $50-60 per weapon. Just bought my 2nd one this year (G19C and G30SF).
S&W has to have the FFL on file where the weapon will be shipped. This means they have to have an original signature on file. you can fax the form, but would have to follow up with postal to get the FFL to them. I just found the S&W "contact us" phone number and got the military discount rep on the phone. there is no reference on their web site for this program.
I got the details on the discount today from S&W. Retired or active duty. One weapon per calendar year. 40% off retail. Must be sent to FFL. I have the form.