When Peter [Cook] left school, national service was still compulsory, but he was excused because of an allergy to feathers. - Judy Cook, 'Loving Peter: My life with Peter Cook and Dudley Moore.'
Terrible things, feathers. Every soldier has to prepare himself for the possibility that, in the dead of night, the enemy will launch an unprovoked attack by feather on them. And if that soldier should happen to have an allergy - well, I wouldn't want to answer for the results.
Yes, death by plumage is one of the most avoidable causes of soldier fatality in the world today.