MARCOS stands for Indian Navy’s Marine Commandos.
MARCOS is Indian Navy’s elite special force, that specializes in everything from counter terrorism to underwater operations.
MARCOS was raised as the Indian Marine Special Forces (IMSF) in 1985.
Those that clear the selection then start undergoing the grilling course which includes basic training at INS Abhimanyu in Mumbai.
The trainees then train in Para jumps at the Paratrooper Training School in Agra and a diving course at Navy’s Diving School in Kochi.
They are expected to have a reaction time of 0.27 seconds.
MARCOS training period is 2 years. For 3 to 4 weeks in a first phase they get physical training and tests and only 40 to 50% (in physical training phase) candidates pass this phase.
They are trained for warfare on sea, land, and air.