A German Attack on the North West Frontier of India. Report by the J.I.C.

2. Routes and their capacity. Once the forces required were concentrated it is probable that, owing to the topography of Northern Afghanistan, a preliminary operation would be necessary to occupy the low lying country including Herat and Mazar-i-Sharif. From these bases and from Northern Iran the following routes forward are available:(a) Route Road from Mazar-i-Sharif to Kabul via Doshi and the Jalmesh Gorge. Quality Good except between December and March, but the gradients are steep, and the road narrow across the Hindu Kush.