Different lectures......
As far as I remember my reading of Al Kuran, there is an exemption of diet for travellers and soldiers....
As in any religion, there is allways a problem when people try to interpret the "Holy Book".
At the moment, there is a wave of integrism, so the pressure is on Muslims to bring them toward the highest degree of strictness and intolerance.
During my childhood, french Catholics used to eat fish on friday...and even if it's still the day when you find the most in market, it's no more considered an obligation here.
A century ago, a woman walking alone in the streets of France, Italy, Spain, Greece...without any veil covering her hair, would have been considered kind of prostitute.
It's not far when Mollahs tell us the right way to eat eggs!