Halo 5 Complete INTEL Locations Guide - All Intel Locations in Halo
Halo 5 has a total of 117 intel items hidden in the campaign. They can be tracked in the menu screen and make it easy to track down intel that you missed. Intel comes in different forms and can reach from ceremonial swords and data pads to terminals.
Most of them are hidden away not far away from the main story path in caves, under stairs or on elevated platforms.
Intel is saved instantly. You don't have to complete Missions for them to be saved.