As above, a hit toll of 1 always fails, however 1+
WS would effectively make you ignore modifiers so would essentially be an unmodifiable 2+
WS.
An unmodified hit roll of 6 always scores a hit, and an unmodified hit roll of 1 always fails. A hit roll can never be modified by more than -1 or +1. This means that if, after all the cumulative modifiers to a hit roll have been calculated, the total modifier would be -2 or worse, it is changed to be -1. Similarly, if, after all the cumulative modifiers to a hit roll have been calculated, the total modifier would be +2 or better, it is changed to be +1.