Looking for link to army training video

Over on YouTube I was able to find three old army training movies:
TF5 3718 Basic Map Reading Part I Map Symbols
TF5 3719 Basic Map Reading Part II Grid, Distance and Elevation
TF5 3721 Basic Map Reading Part IV Direction, Orientation and Location

For some reason I can't seem to locate Part III. Does anyone have a link to this part or know the title?

 

This man seems to have most of the Army training videos on his page-
US Army Training Films - YouTube

He has a great collection with different categories.

 

Thanks. Got parts 1, 2 and 4 from him but nobody seems to have posted part 3.