Written by Lieutenant Harold D. Harris, USMC, this exercise appeared in Volume XI (January 1936) of the Infantry School Mailing List and Volume 21, Number 11 (November 1938) of The Leatherneck.
This article presents the historical solution to the first problem in the exercise. So, if you have not done so already, you will probably wish to start with Problem 1.
The distance to Condega precluded the possibility of reaching there before nightfall.
The lieutenant decided to go through the defile, reach Darali - about four hours march away - before dark, bivouac there overnight, and push on to Condega the following morning.
This exercise continues with Problem 2.