Sub-Roman Britain (Cavalry etc)

[marka]

My contact came up with this reply;

very interesting please thank him for his informative reply.i understood the glue as well as the string were the main weak points.
how effective is a composite say during a wet summer?
can it be used in fog or light rain?
i know tombstones of roman soldiers here in the west tend to show recurve composites

any idea why the english and welsh and the vikings (and probably the franks.slavs and saxons) also used large self bows and continued to do so?every invading nomadic (steppe ie huns and avars) group that came into europe had composites.
is there a different reason(s) for the poor performance of the avars against the west?-when arguably they were one of the most advanced steppe groups (besides the mongols)who invaded europe.