building a good army
my way, is probably not the best or the most balanced, although this is the point of the thread is to
-start with the HQ unit, generally, an army will be themed around the HQ choice you select, for example, if you field Kharn as your HQ choice, then you will be compelled to use lots of khorne units and so forth such as bezerkers and bloodletters.
-your troops choices, remember, you do have of them, so make them count, if you want a well balanced army, you will spread these between the differant types of weapons available to the troops units of your chosen army, for example, you may have a tank-busting tactical squad that has a missile launcher, and a meltagun or maybe a lascannon, for anti infantry, you will probably use lighter weapons such as bolters, this is always a good choice because of their rapid firing abilities.
-tank, you need at least one of these as most people you will play against will generally use a tank either for troops transportation or just as a mobile weapons platform, a tank is always a good thing to use in a balanced army, because if you are trying for low troops, then you can make up for the points cost with a larger tank such as a land raider or so forth, if you are going for more infantry, you can use something like a rhino/ razorback tank that will be able to move your troops and provide covering fire from their weapons.
-walker, this isnt necessary as they are the in-between of tanks and infantry, the walkers are worth having in an army because they can move quickly and fire many weapons and in some cases, use close combat weapons in the assault phase.
-elites, fast attack and heavy support, these are best chosen last as they are only there to make up for where other units lack in battle prowess. the elites would be used to make short attacks, fast attackers can move further than normal units and generally are better at close combat, and heavy support are for far away blasting-away-at-the-enemy tactics.
generally, i will use only 1 HQ, 6 Troops, 1 Tank, 1 Walker, and any other units i can buy with left over points.