Murphy's Military Laws, adapted for 40K
1. No battle plan ever survives contact with the enemy.
2. Friendly fire ain't.
3. The most dangerous thing in the combat zone is Jimmy Murphys Luck
4. The problem with taking the easy way out is that the enemy has already mined it.
5. The buddy system is essential to your survival; it gives the enemy somebody else to shoot at.
6. The further you are in advance of your own positions, the more likely your artillery will shoot short.
7. Incoming fire has the right of way.
8. If your advance is going well, you are walking into an ambush.
9. The only time suppressive fire works is when it is used on abandoned positions.
10. The only thing more accurate than incoming enemy fire is incoming friendly fire.
11. There is nothing more satisfying that having someone take a shot at you, and miss.
12. If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong. Corollary: If there is a worse time for something to go wrong, it will happen then.