Berlancic

While several people tend to dislike defending because of its, sometimes, boring nature, someone has to do it. A defending squad or unit is just as, if not more important, than an assaulting unit. After all, in Project Reality flags need to be captured in a pre-planned order; if the previous flag is attacked and captured, then the assaulting squads have lost their purpose for their mission. In Insurgency, for most maps you need base defence, otherwise Big-Red can steam into your main with no real opposition and rape your assets. And in Command and Control, you have to destroy enemy FOBs sure, but the enemy has to do that as well, and if you have no defence, well, you're practically letting the enemy win.

But defending isn't as simple as having friendlies in the cap radius, that's what defending could turn out to be, but shouldn't be the initial plan. You need to make sure you can defend with an organised force that can defend against an enemy force which is stronger than you. This is the basis you should work on: to have a defence which can withstand an assault from a stronger force than your own.

Assume that the enemy is going to through every piece of their armament at you. Such as tanks, attack helicopters and so forth. So you need to equip your soldiers with such equipment to counter this. Such as Heavy Anti-Tank, MANPADs (AA kit), Sniper etc.
Next you need to identify where you will be defending, i.e. the actual position. You should try to look out for:
*Positions like high ground and more elevated positions. Usually high positions allow you to see the enemy before they commence their assault, which means you can fire on them earlier and have more potential to break the assault.
*Cover positions that you think could serve your forces well.

Next you should look out for enemy avenues of approach. These are places where you think the enemy will approach your position from. You can prioritize these if you think that the enemy won't take a certain avenue over another. But anyhow one key to a good defence is always making sure you protect your flanks. If you are just covering one area, the enemy can easily sneak right up to your position without you knowing it. If you can identify the enemy before they get too close to your position, you can react with an organised force that will be more effective in killing the enemy, rather than if you are forced into close-combat because they snuck up behind you.

One way to help your defence of an objective is to build FOB defences. Remember that you can build razor wire with tank traps, which is good for barricading off infantry and vehicles. Foxholes, which can provide cover and a dug in position for infantry. Heavy Machine Guns, which can supress and tear apart infantry and soft-vehicles, however they have limited view and area to shoot. And static Anti-Air, which provides a great defence against any helicopters or aircraft with a long range.
When you are building HMGs, try and put them facing where you think the enemy infantry is most-likely to approach from. You can only place 2 of them. So have them cover the main enemy avenues of approach.
When building your static AA position, try and place it in an area that has a good overwatch over lots of the airspace, but which isn't too exposed so that people who man the AA don't get picked off by snipers and other infantry. You can place 1 AA per FOB.
Razor wire is best used when you are defending an urban or small area. They are near useless in large-open areas. You can even try to be smart by placing razor wires in some areas but leaving one area open to approach. This will allow for you to focus your fire on that position and maximize the enemy casualites.
Foxholes are good to place when there is no real cover available, they can also be used like razor wires to block off areas.

If you want, you should place some soldiers or squads on reserve in-case the situation goes haywire and soldiers need to be diverted quickly to areas of need.
In addition, you should try to place rally points further away from the defending position, these can be used to alert you if enemies pass by that position. But primarily you use these if your defence is broken and you need to make a swift counter-attack.
And don't dig yourself in too much! you may not be able to get units in or out, or worse, if the enemy claims that position, they can use your defences to their advantage.

__________________

Berlancic

You can even see from the number of views at the time of this post, compared to the number from the 'Attacking a Position' post, that people like attacking more.

__________________