50 kilograms is a bit much, isn't it? 100 kg.

One of the selection subjects of the British Special Air Service Corps is the training of 7-day weight 150 kg. It is to temper the will.

You don't usually carry such heavy things in training. Because the current training should be close to actual combat, there are transport vehicles, special transport troops and composite equipment everywhere, and the weight is very light, so there is no need to carry too much weight to train.