Special reconnaissance

Special reconnaissance (SR) is carried out by small units of highly trained military people.
They are usually from special forces units or military intelligence organizations. They operate behind enemy lines, avoiding direct combat and detection by the enemy. 
Roles.
As a role, SR operates from commando operations, but both are often carried out by the same units. The SR role often includes covert direction of airstrikes and indirect fires. They work in areas deep behind enemy lines, placement of remotely monitored sensors, and preparations for other special forces. 
Like other special forces, SR units may also carry out directly and unconventional warfare, including guerrilla operations.