Polish special forces which translates to lighting in polish candidates must know 2 different languages and the training of ONE soldier is about 1 Million dollars. The soldier will be also a master in karate and stealth killing.
GROM - Operational Mobile Response Group. Polish special forces.
"GROM candidates were first subjected to a grueling psychological examination meant to search for confident and innovative soldiers as well as those who, though they might be lacking in physical strength, possessed the rare gift of internal iron will."