as the only scout unit directly involved in the assault had died the attackers should have automatically lost the assault.
If all of the units in the defending formation have been killed
and at least one attacker survives, then the attacker wins and the
assault is over (go straight to 1.12.

.
If all of the attacking units
directly engaged in the assault are killed then the assault has
stalled and the defender wins (go straight to 1.12.
. ‘Directly
engaged’ means being within 15cm of a defending unit after
charge and counter-charge moves have been completed. If even
one of the original attackers that were within 15cms of the
enemy survives, then the attack has not stalled. In any other case,
both sides can call on support (see 1.12.6).