Firing at half effect

[kilroy]

In the rules for Restricted Fire on page 54 it says a unit fires at half effect when only able to fire with half or just under 3/4 of its strength.
What exactly is meant by half effect? 1 die instead of 2?

[DCRBrown]

K,

Its in relation to casualties caused, so fire as normal and then half the casulties inflicted.

Roll 1D6 to round up/own any half casualties.

DB