D Rats were a 'chocolate' bar (and I use the term loosely) with all of the gastronomic appeal of a slab of congealed wallpaper paste.
But yes, I understood your meaning.
The current term, helpfully supplied by mech infantry types used to working with tracked vehicles, is a track pad, used to describe the *ranger cookies* in MREs, the replacement for the D-bar. That's still about as bad.
The current MRE peanut butter crackers are a little better, but get old real quick. The fig bars are as bad as they sound.
