Doctrine abilities how do they work?
Each time your forces kill someone of the opposing army, you gain experience points. During a fierce battle, you can expect a great number of little green +5 popups appearing on the map- each one of those was a soldier killed in action. Once youve gained enough of these points and chosen a particular company (for example, Airborne for the Allies or Terror for the Axis) you can spend your experience points on certain abilities, such as the V1 Rocket. Be warned though- even if you have enough experience points, itll still take a certain amount of manpower/munitions/fuel to use the power.