Tips

ARMA
Keep mental track of your kills, its important in establishing if a location has been cleared, or its still hot.
Essential Guides
1 Mission planning and execution
2 Command
3 Infantry Movement
4 Navigation
5 Rifles
6 Handguns
7 Anti Tank
8 Sniping
9 Demolitions
10 Armour - Driving
11 Armour - Gunnery
12 Flight - Support
13 Flight - Transport
14 Vehicle - Driving
15 Vehicle - Gunnery