Size

Creatures come in one of ten different size categories, as shown on the Table: Size.
Size affects movement, how well the creature can hide and move undetected, and how easy or hard it is to strike in combat.
When calculating movement, apply the size modifier first, and then other modifiers from other traits or talents (such as Quadruped).
Note that a creature’s movement cannot be reduced to less than 1.    
Size and Examples Modifier to Hit Stealth Base Movement
Miniscule (1): Autoquill, Knife -30 +30 AgB–3
Puny (2): Bolt pistol, Servo-skull -20 +20 AgB–2
Scrawny (3): Gretchin, Human child -10 +10 AgB–1
Average (4): Human, Eldar +0 +0 AgB
Hulking (5): Ork Nob, Armoured Space Marine +10 -10 AgB+1
Enormous (6): Sentinel Walker, Autocarriage +20 -20 AgB+2
Massive (7): Chimera, Greater Daemon +30 -30 AgB+3
Immense (8): Land Raider, Valkyrie Gunship +40 -40 AgB+4
Monumental (9): Ork Squiggoth, Baneblade super-heavy tank +50 -50 AgB+5
Titanic (10): Reaver Battle Titan, Ordinatus war machine +60 -60 AgB+6