Scafite, I see what you are driving at and FED is not quite right (or wrong).
When we left the Canal Zone I believe the Army abandoned a lot of WW2 stored stock for much of the reasons stated above. The RAF OTOH recovered a Hastings C1 that was fairly modern but had been declared Cat 5. That aircraft later saw service as a T5.
Remember, when we left Aden and the Canal Zone these were both potentially opposed departures and a lot of equipment had to be abandoned for various reasons.
In the case of Afg we are there by invitation and will be departing leaving a friendly Government in power. Equipment left behind is therefore being turned over to a friendly country.
and if you believe that last paragraph