Arctic warfare training.

Commando Royal Marines, swimming in a frozen lake.
The troop has to answer a question before exiting, if the answer is wrong he must dunk his head in the water like this troop. 2008

Arctic warfare training.

Commando Royal Marines, swimming in a frozen lake.
The troop has to answer a question before exiting, if the answer is wrong he must dunk his head in the water like this troop. 2008