They [women] cannot march as far or as fast as men, or endure the front-line ordeal as well, or drive a bayonet into an enemy with the same force, or tackle bare-handed an opponent far more muscular and brutal than they are. Some may be trained to shoot well, but whether they will do so in action with male callousness (and eagerness) is doubtful. Courage doesn't come into it. Women are if anything braver than men, but the notion of a female teenager fighting hand-to-hand with a Panzer Grenadier or a Japanese White Tiger - or a Royal Marine - is ludicrous.