I am certain that some anti IED devices were deployed. Suspect they were electronic in nature. Don’t know the details, but know it was done.
How effective they were? Am not sure.
Back in 2007, I spent a half year deployed to Afghanistan doing anti-IED work. I was NOT alone.
However, this article focuses on one narrow and apparently misguided effort:
“The IG already found two Afghan contractors who billed the U.S. government $1 million for the installation of 250 such devices, but then never completed the work or did it haphazardly.
There are at least 2,500 places where the prevention devices were supposed to be installed...no one’s certain if they ever actually were.”