Martial Prowess

Use this Stratagem in the Fight phase when
an IMPERIAL KNIGHTS VEHICLE from
you army is selected as the target of an attack.
Until the end of the phase, each time an attack
is allocated to that model, add 1 to any armour
saving throw taken against that attack.
If that model is an ARMIGER-CLASS model,
this Stratagem costs 1CP; otherwise,
it costs 2CP.