Engineer

A unit entirely with Light Troops can perform Reform Move Manoeuvres up to twice its Mobility (instead of the normal half Mobility).
If, while doing a Reform Move Manoeuvre, its centre moves further than its Mobility, the move is considered a March Move for the purpose of rules triggered due to Marching (e.g. Dangerous Terrain Test and, if Undead, being restricted from performing a March Move, etc.).
For the purpose of shooting, this is still a Reform Move. I.e. the unit can shoot if moving further than its Mobility.
Note: this rule has no effect on other Move Manoeuvres, including March Moves.
A unit containing Light Troops is always considered to have zero Proper Ranks; ignore Attachable Models with Light Troops joined to a unit for this purpose, unless the unit consists of only Attachable Models.

Once during each Shooting Phase, a non-Shaken and Unengaged model with Engineer can select a friendly model with X in a unit within 6": the selected model gains +1 to hit with Shooting Attacks, to a maximum of 3+.
No model can be affected by more than one instance of this effect simultaneously.
The use of this rule must be declared before shooting with the selected model.

All friendly Field Artillery units within 6" of a model with Entrench benefit from Hard Target (1).

A model with Shield is considered to be using a Shield at all times, except during the Melee Phase if it is using a Two-Handed Melee Weapon.
A model using a Shield gains +1 Arm.
In addition, any Height 1-3 model using a Hand Weapon while using a Shield gains Parry.
Note: Shield provides no benefit against Melee Attacks when using a Two-Handed Melee Weapon .
Remember that since Shield (and parry) provide modifiers to Defensive Characteristics, their effects do not apply to a Character on a mount that has its own Defensive Skill or Armour.

A Charging model part with Devastating Charge, or using a weapon with Devastating Charge, gains the Rules and Characteristic modifiers stated in brackets.
For example, a model part with Devastating Charge (+1 Str) gains +1 Str when Charging.

During Combat Choices a model part can only choose a Hand Weapon if it has no other options, or is a Weapon Master.
Models with a Shield using a Hand Weapon gain Parry.
All model parts without Innate Weapons come equipped with a Hand Weapon as their default equipment and cannot lose it.