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The average soldier in the Imperial Guard is an adequately equipped human conscript who lacks the wargear and training to be of any real threat to the powerful enemies of mankind. Worse, this soldier is then stuck walking into a hail of firepower the enemy designed just to defeat the meagre defenses of that flak vest and pot-helmet issued by the IG. Both of these problems can be solved by loading a squad into the Chimaera and rolling right at the enemy. Not only is the soldier now safe from the deadly raking of bullets and bolts sent downrange by the enemy, but the APC has enough armor to survive small arms fire and packs enough firepower to make even renegade Space Marines take pause.
Let me be clear here. The armor is NOT thick enough to withstand heavy weapons or the more powerful assault weapons, nor are the vehicle-mounted guns powerful enough to kill a Space Marine easily or even scratch a heavy tank. But a Chimera IS protected enough to keep the soldiers inside a bit safer than if they were walking and it IS armed well enough to put out a large volume of medium strength firepower. This vehicle is so good, in fact, that a single infantry squad doubles in cost (or costs a bit more than simply double points) but triples in effectiveness. Why is 'Mech-guard' (and the very similar 'Leafblower', for that matter) so common in the tournament scene? THAT'S why!
Yay, Chimeras!
And therein lies my problem. As I try to make a good list, I find that I need Chimeras to make this work. I had packed up my IG long ago and then recently pulled out the figure case that housed my 250 or so infantry models (thank you, hobby buddy who made me interested again!). I know how many of each kind of 'big' tank I have and even how many Sentinel walkers I have, but I had no clue how many Chimeras I owned. Last night, I finally pulled them out again and found that I have 8 in total. That's enough to make any IG player happy. And then I realized something disturbing...
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In any case, let me ask the same question every Cav soldier asks every light Infantryman-
Why walk when you can ride?!?